II. Experimental Procedure

Size: px
Start display at page:

Download "II. Experimental Procedure"

Transcription

1 Ph 122 July 27, 2006 Ohm's Law I. Theory In this lab we will make detailed measurements on one resistor to see if it obeys Ohm's law. We will also verify the formulae for combining resistors in series and parallel, which indirectly tests Ohm s law. Ohm's law describes the behavior of a resistor in the thermal range where the voltage across the resistor is proportional to the current flowing through the resistor. Ohm's law is usually expressed as =IR where is the potential difference measured across the resistor in volts, I is the current through the resistor measured in amps, and R is the resistance of the resistor measured in ohms. Current flowing in a circuit divides at the junctions of wires, that is, where two or more wires connect in the circuit. oltage drops in a circuit occur only across circuit elements. We will observe how the voltage differences are different in a circuit with resistors in series compared to a circuit with resistors in parallel. Additionally, we will observe how the current is different in a circuit with resistors in series compared to a circuit with resistors in parallel. II. Experimental Procedure = IR Equation 1: Ohm s Law A. Setting up a basic circuit. Remove a resistor from the breadboard, and using the ohmmeter function of your multimeter measure its resistance; repeat this for each resistor on the board. Record your results in your lab notebook. The resistors should measure R Ω, R 2 1,000 Ω, and R 3 3,000 Ω. The resistors are each rated by the manufacturer to have measured resistance values within 5% of the given values. Is this rating valid for each of your resistors? Draw a circuit diagram similar to figure 1a in your lab book, showing the 1 kω resistor connected to the power supply. Then connect the circuit. Turn on your power supply and set it to about 10. Draw a circuit diagram in your lab book showing how to connect the voltmeter so as to measure the voltage across the resistor. (See figure 1b.) Turn the multimeter to the " DC voltage scale, and connect the circuit. Record the voltage in your lab notebook. R R (a) (b) (c) Figure 1. (a) Resistor circuit. (b) Placement of volt-meter. (c) Placement of ammeter. A R Ohm - 1

2 If it doesn t seem reasonable, have your instructor check your connections. Turn the power supply off, to minimize the risk of blowing the fuse in the ammeter. We will now connect the ammeter in series with the resistor. First draw a circuit diagram in your lab book showing how to do this, based on figure 1c. Turn the multimeter to the "400 ma" setting, and connect up the circuit. Note that in order to connect the ammeter, you will need to "break" the circuit at the resistor and connect the ammeter into the circuit so that the current flows through it. Check your circuit carefully, turn on the power supply and record the current. If the result seems unreasonable, have your instructor check your connections. Use Ohm s law and your measured values of the voltage across the resistor and the current through the resistor to calculate its resistance R. Q1. Compare the calculated value of R with the measured value (% discrepancy)? What are the sources of error? Do your sources of error account for the discrepancy? B. Detailed Measurements on a Single Resistor. Let's see if the 470 Ω resistor obeys Ohm's law. You will be putting known voltages across the resistor and then measuring the current. You will then plot the results to get the value of the resistor. You will have to decide the best method to take these measurements (keep in mind the power supply display is very inaccurate, plus, you are given two multimeters). Explain the procedure you will use in your lab book and draw the appropriate circuit diagram. Setup a table in Excel to record your voltage and current measurements. Put 2.0 volts across the resistor and measure the current; record your values PRECISELY. Now take about 8 data points in the range: 2 to 16. Plot voltage (y-axis) vs. current (x-axis) on Excel. Use Excel s linest method to get the slope of this graph and the error. Use the slope to determine the resistance of your resistor (including error). For refresher about how to do this, see the first lab: Data Analysis. Write down your best experimental guess of the resistance, including error, in the standard way. Q2. Does the actual value of the resistor (as determined by the ohmmeter) fall in your range? Q3. What accounts for your error? Calculate the maximum power dissipated by your resistor (P = I 2 R = I = 2 /R). The resistor is rated for 0.5 watt of power (i.e. the resistor can dissipate up to 0.5 watt of power before it is damaged). Q4. Did you exceed the power rating, and did it do any damage? Q5. Did the resistor get hot? Why or why not? C. Resistors in Series: R R R R S = Ohm - 2

3 Let's see if three resistors connected in series obey Ohm's law. Specifically, we want to test if the effective resistance, the voltage drops, and the current in our circuit agree with what we calculate using Ohm's Law. Read the following paragraph to get an understanding of what you will need to do. Then decide how you want to set up your circuit and draw a circuit diagram in your lab book before actually hooking things up. Connect R 1, R 2, and R 3 in series with the power supply as shown in circuit diagram (d). Set the power supply to give exactly You may need to use a voltmeter to check this. Set up an ammeter on the "400 ma" setting. Connect the ammeter "upstream" from R 1 as shown in diagram (f). Use a voltmeter to measure the voltage drop separately across each of the resistors R 1, R 2, and R 3. Call these voltages 1, 2, and 3 and record them in your lab book. Record the current, I, in your lab book. Use the measured current and the voltage to calculate the total series resistance R S. Q6. Do the three separate voltage drops add up to 15? Should they? Q7. Compare R S with R 1 + R 2 + R 3 using the values you measured in part A. (i.e. is R S reasonable given your sources of error? What are the sources of error?) D. Resistors in Parallel: = + RP Here, you will check the law for parallel addition of resistors by connecting the resistors in various parallel (and series-parallel) combinations, to see if prediction and measurement agree. Record all measurements and do all calculations in your lab book. 1. Two resistors in parallel. Choose two of your three resistors, and calculate a prediction for the parallel resistance that they should give. Then connect them to the ohm-meter in parallel, as shown in figure 3g, and measure their parallel resistance. Calculate the percent discrepancy between these two numbers. 2. Three resistors in parallel. Calculate the expected equivalent resistance for all three resistors connected in parallel, as shown in figure 3h. Draw the circuit, hook them up and measure the resistance. Calculate the percent discrepancy. 3. Series-parallel combination. (g) (d) (e) A (f) Figure 2. (d) Resistors in series. (e) Placement of voltmeter. (f) Placement of ammeter. Ω R 1 R 2 Ω R 1 Ω R 1 (i) Figure 3. (g) Two resistors in parallel. (h) Three resistors in parallel. (i) Series-parallel combination. (h) Ohm - 3

4 Now try the combination in figure 3i. As before, predict the equivalent resistance; draw the circuit; wire it up; and measure the equivalent resistance. Calculate the percent discrepancy. Q8. What are the sources of error in these measurements? Are the discrepancies you calculated reasonable given the sources of error you mentioned? Explain in detail. E. The resistor cube challenge problem. Ask your lab instructor. III. Equipment Resistors: 470 Ω, 1,000 Ω, 3,000 Ω resistors (0.5 W power) Digital multimeters (Metex M-38500) Power supply (HY ) Banana-plug hookup wires: 4 short, 2 long Mini-grabbers Resistor cube for demonstration, if available (10 k on a side) I. Appendix: Resistor Color Code One of the important components in an electric circuit is the resistor. The most common kind is made from a thin carbon film. You should have some at your table. Their resistance can vary from less than one ohm to 20 million ohms or so. Each one is marked with the value of its resistance, using the resistor color code. (See Table I on the next page.) a b c d Figure 4. A color-coded resistor. Ohm - 4

5 There are four colored bands on a resistor. The first three colors represent numbers: a, b, and c. The value of the resistance in ohms is then given by the number: c R = abx10 Ω For example, if a=6, b=8, and c=3, R = 68 x 10 3 ohms. The fourth band indicates the precision with which the resistance is known. NOTE: you may be supplied with high-precision resistors, which have five bands, with the extra band used to give another significant figure to the resistance value. TABLE I. RESISTOR COLOR CODE color number black 0 brown 1 red 2 orange 3 yellow 4 green 5 blue 6 violet 7 gray 8 white 9 silver 10% precision gold 5% precision Ohm - 5

DC Circuits and Ohm s Law

DC Circuits and Ohm s Law DC Circuits and Ohm s Law INTRODUCTION During the nineteenth century so many advances were made in understanding the electrical nature of matter that it has been called the age of electricity. One such

More information

Experiment 3. Ohm s Law. Become familiar with the use of a digital voltmeter and a digital ammeter to measure DC voltage and current.

Experiment 3. Ohm s Law. Become familiar with the use of a digital voltmeter and a digital ammeter to measure DC voltage and current. Experiment 3 Ohm s Law 3.1 Objectives Become familiar with the use of a digital voltmeter and a digital ammeter to measure DC voltage and current. Construct a circuit using resistors, wires and a breadboard

More information

Experiment 2. Ohm s Law. Become familiar with the use of a digital voltmeter and a digital ammeter to measure DC voltage and current.

Experiment 2. Ohm s Law. Become familiar with the use of a digital voltmeter and a digital ammeter to measure DC voltage and current. Experiment 2 Ohm s Law 2.1 Objectives Become familiar with the use of a digital voltmeter and a digital ammeter to measure DC voltage and current. Construct a circuit using resistors, wires and a breadboard

More information

V (in volts) = voltage applied to the circuit, I (in amperes) = current flowing in the circuit, R (in ohms) = resistance of the circuit.

V (in volts) = voltage applied to the circuit, I (in amperes) = current flowing in the circuit, R (in ohms) = resistance of the circuit. OHM S LW OBJECTIES: PRT : 1) Become familiar with the use of ammeters and voltmeters to measure DC voltage and current. 2) Learn to use wires and a breadboard to build circuits from a circuit diagram.

More information

OHM'S LAW AND RESISTANCE NETWORKS OBJECT

OHM'S LAW AND RESISTANCE NETWORKS OBJECT 17 E7 E7.1 OHM'S LAW AND RESISTANCE NETWORKS OBJECT The objects of this experiment are to determine the voltage-current relationship for a resistor and to verify the series and parallel resistance formulae.

More information

Ohm s Law and Electrical Circuits

Ohm s Law and Electrical Circuits Ohm s Law and Electrical Circuits INTRODUCTION In this experiment, you will measure the current-voltage characteristics of a resistor and check to see if the resistor satisfies Ohm s law. In the process

More information

DC Circuits and Ohm s Law

DC Circuits and Ohm s Law DC Circuits and Ohm s Law INTRODUCTION During the nineteenth century so many advances were made in understanding the electrical nature of matter that it has been called the age of electricity. One such

More information

+ A Supply B. C Load D

+ A Supply B. C Load D 17 E7 E7.1 OHM'S LAW AND RESISTANCE NETWORKS OBJECT The objects of this experiment are to determine the voltage-current relationship for a resistor and to verify the series and parallel resistance formulae.

More information

EGR 101 LABORATORY 1 APPLICATION OF ALGEBRA IN ENGINEERING Wright State University

EGR 101 LABORATORY 1 APPLICATION OF ALGEBRA IN ENGINEERING Wright State University EGR 101 LABORATORY 1 APPLCATON OF ALGEBRA N ENGNEERNG Wright State University OBJECTVE: The objective of this laboratory is to illustrate applications of algebra (lines and quadratics) in engineering.

More information

1-1. Kirchoff s Laws A. Construct the circuit shown below. R 1 =1 kω. = 2.7 kω R 3 R 2 5 V

1-1. Kirchoff s Laws A. Construct the circuit shown below. R 1 =1 kω. = 2.7 kω R 3 R 2 5 V Physics 310 Lab 1: DC Circuits Equipment: Digital Multimeter, 5V Supply, Breadboard, two 1 kω, 2.7 kω, 5.1 kω, 10 kω, two, Decade Resistor Box, potentiometer, 10 kω Thermistor, Multimeter Owner s Manual

More information

Lab 3 DC CIRCUITS AND OHM'S LAW

Lab 3 DC CIRCUITS AND OHM'S LAW 43 Name Date Partners Lab 3 DC CIRCUITS AND OHM'S LAW AMPS + - VOLTS OBJECTIVES To learn to apply the concept of potential difference (voltage) to explain the action of a battery in a circuit. To understand

More information

EET 150 Introduction to EET Lab Activity 1 Resistor Color Codes and Resistor Value Measurement

EET 150 Introduction to EET Lab Activity 1 Resistor Color Codes and Resistor Value Measurement Required Parts, Software and Equipment Parts 20 assorted 1/4 watt resistors 5% tolerance Equipment Required Solderless Experimenters' Board Digital Multimeter Optional Alligator clip leads hookup wire

More information

DC CIRCUITS AND OHM'S LAW

DC CIRCUITS AND OHM'S LAW July 15, 2008 DC Circuits and Ohm s Law 1 Name Date Partners DC CIRCUITS AND OHM'S LAW AMPS - VOLTS OBJECTIVES OVERVIEW To learn to apply the concept of potential difference (voltage) to explain the action

More information

Lab 4 OHM S LAW AND KIRCHHOFF S CIRCUIT RULES

Lab 4 OHM S LAW AND KIRCHHOFF S CIRCUIT RULES 57 Name Date Partners Lab 4 OHM S LAW AND KIRCHHOFF S CIRCUIT RULES AMPS - VOLTS OBJECTIVES To learn to apply the concept of potential difference (voltage) to explain the action of a battery in a circuit.

More information

RESISTANCE & OHM S LAW (PART I

RESISTANCE & OHM S LAW (PART I RESISTANCE & OHM S LAW (PART I and II) Objectives: To understand the relationship between potential and current in a resistor and to verify Ohm s Law. To understand the relationship between potential and

More information

Chapter 1: DC circuit basics

Chapter 1: DC circuit basics Chapter 1: DC circuit basics Overview Electrical circuit design depends first and foremost on understanding the basic quantities used for describing electricity: voltage, current, and power. In the simplest

More information

Ohm's Law and DC Circuits

Ohm's Law and DC Circuits Physics Lab II Ohm s Law Name: Partner: Partner: Partner: Ohm's Law and DC Circuits EQUIPMENT NEEDED: Circuits Experiment Board Two Dcell Batteries Wire leads Multimeter 100, 330, 560, 1k, 10k, 100k, 220k

More information

DC Circuits, Ohm's Law and Multimeters Physics 246

DC Circuits, Ohm's Law and Multimeters Physics 246 DC Circuits, Ohm's Law and Multimeters Physics 246 Theory: In this lab we will learn the use of multimeters, verify Ohm s law, and study series and parallel combinations of resistors and capacitors. For

More information

Chapter 1: DC circuit basics

Chapter 1: DC circuit basics Chapter 1: DC circuit basics Overview Electrical circuit design depends first and foremost on understanding the basic quantities used for describing electricity: Voltage, current, and power. In the simplest

More information

ENGINEERING COUNCIL CERTIFICATE LEVEL ENGINEERING SCIENCE C103

ENGINEERING COUNCIL CERTIFICATE LEVEL ENGINEERING SCIENCE C103 ENGINEERING COUNCIL CERTIFICATE LEVEL ENGINEERING SCIENCE C03 TUTORIAL 4 ELECTRICAL RESISTANCE On completion of this tutorial you should be able to do the following. Explain resistance and resistors. Explain

More information

PHYS 1402 General Physics II Experiment 5: Ohm s Law

PHYS 1402 General Physics II Experiment 5: Ohm s Law PHYS 1402 General Physics II Experiment 5: Ohm s Law Student Name Objective: To investigate the relationship between current and resistance for ordinary conductors known as ohmic conductors. Theory: For

More information

DC Circuits. Date: Introduction

DC Circuits. Date: Introduction Group # Date: Names: DC Circuits Introduction In this experiment you will examine how to make simple DC measurements that involve current, voltage, and resistance. The current I through a resistor R with

More information

Experiment 2 Electric Circuit Fundamentals

Experiment 2 Electric Circuit Fundamentals Experiment 2 Electric Circuit Fundamentals Introduction This experiment has two parts. Each part will have to be carried out using the Multisim Electronics Workbench software. The experiment will then

More information

Engineering Laboratory Exercises (Electric Circuits Module) Prepared by

Engineering Laboratory Exercises (Electric Circuits Module) Prepared by Engineering 1040 Laboratory Exercises (Electric Circuits Module) Prepared by Eric W. Gill FALL 2008 2 EXP 1040-EL1 VOLTAGE, CURRENT, RESISTANCE AND POWER PURPOSE To (i) investigate the relationship between

More information

The Art of Electrical Measurements

The Art of Electrical Measurements The Art of Electrical Measurements Purpose: Introduce fundamental electrical test and measurement tools and the art of making electrical measurements. Equipment Required Prelab 1 Digital Multimeter 1 -

More information

General Lab Notebook instructions (from syllabus)

General Lab Notebook instructions (from syllabus) Physics 310 Lab 1: DC Circuits Equipment: Digital Multimeter, 5V Supply, Breadboard, two 1 k, 2.7 k, 5.1 k, 10 k, two Decade Resistor Box, potentiometer, 10 k Thermistor, Multimeter Owner s Manual General

More information

EE283 Laboratory Exercise 1-Page 1

EE283 Laboratory Exercise 1-Page 1 EE283 Laboratory Exercise # Basic Circuit Concepts Objectives:. To become familiar with the DC Power Supply unit, analog and digital multi-meters, fixed and variable resistors, and the use of solderless

More information

Lab 1: Basic Lab Equipment and Measurements

Lab 1: Basic Lab Equipment and Measurements Abstract: Lab 1: Basic Lab Equipment and Measurements This lab exercise introduces the basic measurement instruments that will be used throughout the course. These instruments include multimeters, oscilloscopes,

More information

Introduction to the Laboratory

Introduction to the Laboratory Memorial University of Newfoundland Department of Physics and Physical Oceanography Physics 2055 Laboratory Introduction to the Laboratory The purpose of this lab is to introduce you to some of the equipment

More information

Module 1, Lesson 2 Introduction to electricity. Student. 45 minutes

Module 1, Lesson 2 Introduction to electricity. Student. 45 minutes Module 1, Lesson 2 Introduction to electricity 45 minutes Student Purpose of this lesson Explanations of fundamental quantities of electrical circuits, including voltage, current and resistance. Use a

More information

Experiment 3 Ohm s Law

Experiment 3 Ohm s Law Experiment 3 Ohm s Law The goals of Experiment 3 are: To identify resistors based upon their color code. To construct a two-resistor circuit using proper wiring techniques. To measure the DC voltages and

More information

Experiment A3 Electronics I Procedure

Experiment A3 Electronics I Procedure Experiment A3 Electronics I Procedure Deliverables: Checked lab notebook, Brief technical memo Overview Most of the transducers used in modern engineering applications are electronic, meaning they convert

More information

Physics 1051 Laboratory #4 DC Circuits and Ohm s Law. DC Circuits and Ohm s Law

Physics 1051 Laboratory #4 DC Circuits and Ohm s Law. DC Circuits and Ohm s Law DC Circuits and Ohm s Law Contents Part I: Objective Part II: Introduction Part III: Apparatus and Setup Part IV: Measurements Part V: Analysis Part VI: Summary and Conclusions Part I: Objective In this

More information

EE 201 Lab 1. Meters, DC sources, and DC circuits with resistors

EE 201 Lab 1. Meters, DC sources, and DC circuits with resistors Meters, DC sources, and DC circuits with resistors 0. Prior to lab Read through the lab and do as many of the calculations as possible. Then, learn how to determine resistance values using the color codes.

More information

Series and Parallel Resistors

Series and Parallel Resistors Lab 8. Series and Parallel Resistors Goals To understand the fundamental difference between resistors connected in series and in parallel. To calculate the voltages and currents in simple circuits involving

More information

Circuit LED 1 LED 2 A on or off on or off B on or off on or off C on or off on or off

Circuit LED 1 LED 2 A on or off on or off B on or off on or off C on or off on or off Cornerstone Electronics Technology and Robotics Week 8 Chapter 3, Introduction to Basic Electrical Circuit Materials Continued Administration: o Prayer o Turn in quiz Review LED s: o Wire the following

More information

Resistance. Department of Physics & Astronomy Texas Christian University, Fort Worth, TX. April 23, 2013

Resistance. Department of Physics & Astronomy Texas Christian University, Fort Worth, TX. April 23, 2013 Resistance Department of Physics & Astronomy Texas Christian University, Fort Worth, TX April 23, 2013 1 Introduction Electrical resistance is a measure of how much an object opposes (or resists) the flow

More information

Lab 4 Ohm s Law and Resistors

Lab 4 Ohm s Law and Resistors ` Lab 4 Ohm s Law and Resistors What You Need To Know: The Physics One of the things that students have a difficult time with when they first learn about circuits is the electronics lingo. The lingo and

More information

Electric Circuit Experiments

Electric Circuit Experiments Electric Circuit Experiments 1. Using the resistor on the 5-resistor block, vary the potential difference across it in approximately equal increments for eight different values (i.e. use one to eight D-

More information

EE EXPERIMENT 3 RESISTIVE NETWORKS AND COMPUTATIONAL ANALYSIS INTRODUCTION

EE EXPERIMENT 3 RESISTIVE NETWORKS AND COMPUTATIONAL ANALYSIS INTRODUCTION EE 2101 - EXPERIMENT 3 RESISTIVE NETWORKS AND COMPUTATIONAL ANALYSIS INTRODUCTION The resistors used in this laboratory are carbon composition resistors, consisting of graphite or some other type of carbon

More information

Resistance and Ohm s law

Resistance and Ohm s law Resistance and Ohm s law Objectives Characterize materials as conductors or insulators based on their electrical properties. State and apply Ohm s law to calculate current, voltage or resistance in an

More information

Experiment 1 Basic Resistive Circuit Parameters

Experiment 1 Basic Resistive Circuit Parameters Experiment 1 Basic Resistive Circuit Parameters Report Due In-class on Wed., Mar. 14, 2018 Note: (1) The Prelab section must be completed prior to the lab period. (2) All submitted lab reports should have

More information

Lab 1 - Intro to DC Circuits

Lab 1 - Intro to DC Circuits Objectives Pre-Lab Background Equipment List Procedure Equipment Familiarization Student PC Board DC Power Supply Digital Multimeter Power Supply Cont Decade Box Ohms Law and Power Dissipation Current

More information

Experiment 1: Circuits Experiment Board

Experiment 1: Circuits Experiment Board 01205892C AC/DC Electronics Laboratory Experiment 1: Circuits Experiment Board EQUIPMENT NEEDED: AC/DC Electronics Lab Board: Wire Leads Dcell Battery Graph Paper Purpose The purpose of this lab is to

More information

These are samples of learning materials and may not necessarily be exactly the same as those in the actual course. Contents 1.

These are samples of learning materials and may not necessarily be exactly the same as those in the actual course. Contents 1. Contents These are samples of learning materials and may not necessarily be exactly the same as those in the actual course. Contents 1 Introduction 2 Ohm s law relationships 3 The Ohm s law equation 4

More information

Ohm s Law. 1 Object. 2 Apparatus. 3 Theory. To study resistors, Ohm s law, linear behavior, and non-linear behavior.

Ohm s Law. 1 Object. 2 Apparatus. 3 Theory. To study resistors, Ohm s law, linear behavior, and non-linear behavior. Ohm s Law Object To study resistors, Ohm s law, linear behavior, and non-linear behavior. pparatus esistors, power supply, meters, wires, and alligator clips. Theory resistor is a circuit element which

More information

Ohm s Law. 1 Object. 2 Apparatus. 3 Theory. To study resistors, Ohm s law, linear behavior, and non-linear behavior.

Ohm s Law. 1 Object. 2 Apparatus. 3 Theory. To study resistors, Ohm s law, linear behavior, and non-linear behavior. Ohm s Law Object To study resistors, Ohm s law, linear behavior, and non-linear behavior. pparatus esistors, power supply, meters, wires, and alligator clips. Theory resistor is a circuit element which

More information

Electric Circuit I Lab Manual. Session # 1

Electric Circuit I Lab Manual. Session # 1 Electric Circuit I Lab Manual Session # 1 Lab Policies 1. Each lab session lasts 90 min and starts promptly. A brief introduction with demo may be given by the instructor at the beginning of the lab. Everybody

More information

Lab 2: DC Circuits Lab Assignment

Lab 2: DC Circuits Lab Assignment 2 class days 1. I-V curve for various components Source: Curtis, 1.2.1. (HH 1.1, 1.2, 1.3) Lab 2: DC Circuits Lab Assignment A passive element is a two-contact device that contains no source of power or

More information

Configurations of Resistors

Configurations of Resistors Configurations of Resistors Safety and Equipment Multimeter with probes or banana leads. Two of 50Ω and one of 100Ω resistors 5 connecting wires with double alligator clips Introduction There are two basic

More information

THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT

THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT THE BREADBOARD; DC POWER SUPPLY; RESISTANCE OF METERS; NODE VOLTAGES AND EQUIVALENT RESISTANCE; THÉVENIN EQUIVALENT CIRCUIT YOUR NAME GTA S SIGNATURE LAB MEETING TIME Objectives: To correctly operate the

More information

PHY 132 LAB : Ohm s Law

PHY 132 LAB : Ohm s Law PHY 132 LAB : Ohm s Law Introduction: In this lab, we look at the concepts of electrical resistance and resistivity. Text Reference: Wolfson 27:2-3. Special equipment notes: 1. Note the tips on wiring

More information

electrical noise and interference, environmental changes, instrument resolution, or uncertainties in the measurement process itself.

electrical noise and interference, environmental changes, instrument resolution, or uncertainties in the measurement process itself. MUST 382 / EELE 491 Spring 2014 Basic Lab Equipment and Measurements Electrical laboratory work depends upon various devices to supply power to a circuit, to generate controlled input signals, and for

More information

Oregon State University Lab Session #1 (Week 3)

Oregon State University Lab Session #1 (Week 3) Oregon State University Lab Session #1 (Week 3) ENGR 201 Electrical Fundamentals I Equipment and Resistance Winter 2016 EXPERIMENTAL LAB #1 INTRO TO EQUIPMENT & OHM S LAW This set of laboratory experiments

More information

EK307 Introduction to the Lab

EK307 Introduction to the Lab EK307 Introduction to the Lab Learning to Use the Test Equipment Laboratory Goal: Become familiar with the test equipment in the electronics laboratory (PHO105). Learning Objectives: Voltage source and

More information

Materials: resistors: (5) 1 kω, (4) 2 kω, 2.2 kω, 3 kω, 3.9 kω digital multimeter (DMM) power supply w/ leads breadboard, jumper wires

Materials: resistors: (5) 1 kω, (4) 2 kω, 2.2 kω, 3 kω, 3.9 kω digital multimeter (DMM) power supply w/ leads breadboard, jumper wires Lab 6: Electrical Engineering Technology References: 1. Resistor (electronic) color code: http://en.wikipedia.org/wiki/electronic_color_code 2. Resistor color code tutorial: http://www.michaels-electronics-lessons.com/resistor-color-code.html

More information

VISUAL PHYSICS ONLINE. Experiment PA41A ELECTRIC CIRCUITS

VISUAL PHYSICS ONLINE. Experiment PA41A ELECTRIC CIRCUITS VISUAL PHYSICS ONLINE Experiment PA41A ELECTRIC CIRCUITS Equipment (see Appendices) 12V DC power supply (battery): multimeter (and/or milliammeter and voltmeter); electrical leads; alligator clips; fixed

More information

UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering

UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering EXPERIMENT 2 BASIC CIRCUIT ELEMENTS OBJECTIVES The purpose of this experiment is to familiarize the student with

More information

PHYS Contemporary Physics Laboratory Laboratory Exercise: LAB 01 Resistivity, Root-mean-square Voltage, Potentiometer (updated 1/25/2017)

PHYS Contemporary Physics Laboratory Laboratory Exercise: LAB 01 Resistivity, Root-mean-square Voltage, Potentiometer (updated 1/25/2017) PHYS351001 Contemporary Physics Laboratory Laboratory Exercise: LAB 01 Resistivity, Root-mean-square Voltage, Potentiometer (updated 1/25/2017) PART I: SOME FUNDAMENTAL CONCEPTS: 1. Limits on accuracy

More information

Lab 11: Circuits. Figure 1: A hydroelectric dam system.

Lab 11: Circuits. Figure 1: A hydroelectric dam system. Description Lab 11: Circuits In this lab, you will study voltage, current, and resistance. You will learn the basics of designing circuits and you will explore how to find the total resistance of a circuit

More information

EECE 2413 Electronics Laboratory

EECE 2413 Electronics Laboratory EECE 2413 Electronics Laboratory Lab #2: Diode Circuits Goals In this lab you will become familiar with several different types of pn-junction diodes. These include silicon and germanium junction diodes,

More information

Current, resistance, and Ohm s law

Current, resistance, and Ohm s law Current, resistance, and Ohm s law Apparatus DC voltage source set of alligator clips 2 pairs of red and black banana clips 3 round bulb 2 bulb sockets 2 battery holders or 1 two-battery holder 2 1.5V

More information

AME140 Lab #2 INTRODUCTION TO ELECTRONIC TEST EQUIPMENT AND BASIC ELECTRONICS MEASUREMENTS

AME140 Lab #2 INTRODUCTION TO ELECTRONIC TEST EQUIPMENT AND BASIC ELECTRONICS MEASUREMENTS INTRODUCTION TO ELECTRONIC TEST EQUIPMENT AND BASIC ELECTRONICS MEASUREMENTS The purpose of this document is to guide students through a few simple activities to increase familiarity with basic electronics

More information

ENGR 120 LAB #2 Electronic Tools and Ohm s Law

ENGR 120 LAB #2 Electronic Tools and Ohm s Law ENGR 120 LAB #2 Electronic Tools and Ohm s Law Objectives Understand how to use a digital multi-meter, power supply and proto board and apply that knowledge to constructing circuits to demonstrate ohm

More information

Pre-Laboratory Assignment

Pre-Laboratory Assignment Measurement of Electrical Resistance and Ohm's Law PreLaboratory Assignment Read carefully the entire description of the laboratory and answer the following questions based upon the material contained

More information

Voltage Current and Resistance II

Voltage Current and Resistance II Voltage Current and Resistance II Equipment: Capstone with 850 interface, analog DC voltmeter, analog DC ammeter, voltage sensor, RLC circuit board, 8 male to male banana leads 1 Purpose This is a continuation

More information

EK 307 Lab: Light-Emitting Diodes. In-lab Assignment (Complete Level 1 and additionally level 2 if you choose to):

EK 307 Lab: Light-Emitting Diodes. In-lab Assignment (Complete Level 1 and additionally level 2 if you choose to): EK 307 Lab: Light-Emitting Diodes Laboratory Goal: To explore the characteristics of the light emitting diode. Learning Objectives: Voltage, Current, Power, and Instrumentation. Suggested Tools: Voltage

More information

Lab 1: DC Measurements (R, V, I)

Lab 1: DC Measurements (R, V, I) Lab 1: DC Measurements (R, V, I) Introduction Resistors are the most common component found in all electrical and electronic circuits. Resistors are found in many shapes, sizes, and values. The most common

More information

PHYS 1112L - Introductory Physics Laboratory II

PHYS 1112L - Introductory Physics Laboratory II PHYS 1112L - Introductory Physics Laboratory II Laboratory Advanced Sheet dc Circuits 1. Objectives. The objectives of this laboratory are a. to be able to construct dc circuits given a circuit diagram

More information

(%) ex Blue-Black-Brown-Gold 600 Ω ± 5% ± 30 1

(%) ex Blue-Black-Brown-Gold 600 Ω ± 5% ± 30 1 ** Disclaimer: This Lab is not to be copied, duplicated, and/or distributed, in whole or in part, unless approval is received from the University of Colorado at Colorado Springs Physics Department AND

More information

Lab #1: Electrical Measurements I Resistance

Lab #1: Electrical Measurements I Resistance Lab #: Electrical Measurements I esistance Goal: Learn to measure basic electrical quantities; study the effect of measurement apparatus on the quantities being measured by investigating the internal resistances

More information

Lab Equipment. PES 2160 Prelab Questions. Name: Lab Station: 005

Lab Equipment. PES 2160 Prelab Questions. Name: Lab Station: 005 ** Disclaimer: This prelab is not to be copied, duplicated, and/or distributed, in whole or in part, unless approval is received from the University of Colorado at Colorado Springs Physics Department AND

More information

University of Jordan School of Engineering Electrical Engineering Department. EE 219 Electrical Circuits Lab

University of Jordan School of Engineering Electrical Engineering Department. EE 219 Electrical Circuits Lab University of Jordan School of Engineering Electrical Engineering Department EE 219 Electrical Circuits Lab EXPERIMENT 1 REPORT MEASUREMENT DEVICES Group # 1. 2. 3. 4. Student Name ID EXPERIMENT 1 MEASUREMENT

More information

PHY203: General Physics III Lab page 1 of 5 PCC-Cascade. Lab: AC Circuits

PHY203: General Physics III Lab page 1 of 5 PCC-Cascade. Lab: AC Circuits PHY203: General Physics III Lab page 1 of 5 Lab: AC Circuits OBJECTIVES: EQUIPMENT: Universal Breadboard (Archer 276-169) 2 Simpson Digital Multimeters (464) Function Generator (Global Specialties 2001)*

More information

ECE ECE285. Electric Circuit Analysis I. Spring Nathalia Peixoto. Rev.2.0: Rev Electric Circuits I

ECE ECE285. Electric Circuit Analysis I. Spring Nathalia Peixoto. Rev.2.0: Rev Electric Circuits I ECE285 Electric Circuit Analysis I Spring 2014 Nathalia Peixoto Rev.2.0: 140124. Rev 2.1. 140813 1 Lab reports Background: these 9 experiments are designed as simple building blocks (like Legos) and students

More information

EE 210: CIRCUITS AND DEVICES

EE 210: CIRCUITS AND DEVICES EE 210: CIRCUITS AND DEVICES LAB #3: VOLTAGE AND CURRENT MEASUREMENTS This lab features a tutorial on the instrumentation that you will be using throughout the semester. More specifically, you will see

More information

Using Voltage Dividers to Design a Photo-Sensitive LED Circuit. ( Doug Oliver & Jackie Kane. May be reproduced for non-profit classroom use.

Using Voltage Dividers to Design a Photo-Sensitive LED Circuit. ( Doug Oliver & Jackie Kane. May be reproduced for non-profit classroom use. Using Voltage Dividers to Design a Photo-Sensitive LED Circuit ( 2009 - Doug Oliver & Jackie Kane. May be reproduced for non-profit classroom use.) Purpose: After completing the module students will: 1.

More information

PH213 Chapter 26 solutions

PH213 Chapter 26 solutions PH213 Chapter 26 solutions 26.6. IDENTIFY: The potential drop is the same across the resistors in parallel, and the current into the parallel combination is the same as the current through the 45.0-Ω resistor.

More information

2007 The McGraw-Hill Companies, Inc. All rights reserved.

2007 The McGraw-Hill Companies, Inc. All rights reserved. Chapter 2 Resistors Topics Covered in Chapter 2 2-1: Types of Resistors 2-2: Resistor Color Coding 2-3: Variable Resistors 2-4: Rheostats and Potentiometers 2-5: Power Ratings of Resistors 2-6: Resistor

More information

Laboratory Project 1a: Power-Indicator LED's

Laboratory Project 1a: Power-Indicator LED's 2240 Laboratory Project 1a: Power-Indicator LED's Abstract-You will construct and test two LED power-indicator circuits for your breadboard in preparation for building the Electromyogram circuit in Lab

More information

PHY132 Summer 2010 Ohm s Law

PHY132 Summer 2010 Ohm s Law PHY132 Summer 2010 Ohm s Law Introduction: In this lab, we will examine the concepts of electrical resistance and resistivity. Text Reference Young & Freedman 25.2-3. Special equipment notes: 1. Note the

More information

EET140/3 ELECTRIC CIRCUIT I

EET140/3 ELECTRIC CIRCUIT I SCHOOL OF ELECTRICAL SYSTEM ENGINEERING UNIVERSITI MALAYSIA PERLIS EET140/3 ELECTRIC CIRCUIT I MODULE 1 PART I: INTRODUCTION TO BASIC LABORATORY EQUIPMENT PART II: OHM S LAW PART III: SERIES PARALEL CIRCUIT

More information

AC/DC ELECTRONICS LABORATORY

AC/DC ELECTRONICS LABORATORY Includes Teacher's Notes and Typical Experiment Results Instruction Manual and Experiment Guide for the PASCO scientific Model EM-8656 012-05892A 1/96 AC/DC ELECTRONICS LABORATORY 1995 PASCO scientific

More information

Resistance and Resistivity

Resistance and Resistivity Resistance and Resistivity Lab Section (circle): Day: Monday Tuesday Time: 8:00 9:30 1:10 2:40 Name: Partners: Pre-Lab You are required to finish this section before coming to the lab it will be checked

More information

EK 307 Lab: Light-Emitting Diodes

EK 307 Lab: Light-Emitting Diodes EK 307 Lab: Light-Emitting Diodes Laboratory Goal: To explore the characteristics of the light emitting diode. Learning Objectives: Voltage, current, power, and instrumentation. Suggested Tools: Voltage

More information

Electromagnetism Unit- Current Sub-Unit

Electromagnetism Unit- Current Sub-Unit 4.2.1 Electrical Current Definitions current unit: or requires: Example #3 A wire carries a current of 50 amperes. How much charge flows through the wire in 10 seconds? How many electrons pass through

More information

Chapter 13. Electric Circuits

Chapter 13. Electric Circuits Chapter 13 Electric Circuits Lower Potential Battery (EMF - E) - + Higher Potential Bulb (Resistor) Wires (No Change in Potential) EMF (Voltage Source) _ + Resistor Working Circuits For a circuit to work,

More information

UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering

UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE Department of Electrical and Computer Engineering EXPERIMENT 1 MAXIMUM POWER TRANSFER OBJECTIVES In this experiment the student will investigate the circuit requirements

More information

HANDS-ON ACTIVITY 4 BUILDING SERIES AND PARALLEL CIRCUITS BACKGROUND WIRING DIRECTIONS

HANDS-ON ACTIVITY 4 BUILDING SERIES AND PARALLEL CIRCUITS BACKGROUND WIRING DIRECTIONS ACTIVITY 4 BUILDING SERIES AND PARALLEL CIRCUITS BACKGROUND Make sure you read the background in Activity 3 before doing this activity. WIRING DIRECTIONS Materials per group of two: one or two D-cells

More information

Syllabus OP49 Test electrical conduction in a variety of materials, and classify each material as a conductor or insulator

Syllabus OP49 Test electrical conduction in a variety of materials, and classify each material as a conductor or insulator Physics: 14. Current Electricity Please remember to photocopy 4 pages onto one sheet by going A3 A4 and using back to back on the photocopier Syllabus OP49 Test electrical conduction in a variety of materials,

More information

CK-12 Physics Concepts - Intermediate Answer Key

CK-12 Physics Concepts - Intermediate Answer Key Chapter 19: Electrical Circuits 19.1 Series Circuits CK-12 Physics Concepts - Intermediate Answer Key 1. There are three 20.0 Ohm resistors connected in series across a 120 V generator. a. What is the

More information

Ohm's Law and the Measurement of Resistance

Ohm's Law and the Measurement of Resistance Ohm's Law and the Measurement of Resistance I. INTRODUCTION An electric current flows through a conductor when a potential difference is placed across its ends. The potential difference is generally in

More information

DEPARTMENT OF ELECTRONIC ENGINEERING ELECTRONIC WORKSHOP # 03. Resistors

DEPARTMENT OF ELECTRONIC ENGINEERING ELECTRONIC WORKSHOP # 03. Resistors MEHRAN UNIVERSITY OF ENGINEERING AND TECHNOLOGY, JAMSHORO DEPARTMENT OF ELECTRONIC ENGINEERING ELECTRONIC WORKSHOP # 03 Resistors Roll. No: Checked by: Date: Grade: Object: To become familiar with resistors,

More information

Course materials and schedule are at. positron.hep.upenn.edu/p364

Course materials and schedule are at. positron.hep.upenn.edu/p364 Physics 364, Fall 2014, Lab #1 Name: (using breadboards; measuring voltage, current, and resistance) Wednesday, August 27 (section 401); Thursday, August 28 (section 402) Course materials and schedule

More information

OHM S LAW. Ohm s Law The relationship between potential difference (V) across a resistor of resistance (R) and the current (I) passing through it is

OHM S LAW. Ohm s Law The relationship between potential difference (V) across a resistor of resistance (R) and the current (I) passing through it is OHM S LAW Objectives: a. To find the unknown resistance of an ohmic resistor b. To investigate the series and parallel combination of resistors c. To investigate the non-ohmic resistors Apparatus Required:

More information

EECS 100/43 Lab 1 Sources and Resistive Circuits

EECS 100/43 Lab 1 Sources and Resistive Circuits 1. Objective EECS 100/43 Lab 1 Sources and Resistive Circuits In this lab, you learn how to use the basic equipment on your workbench: the breadboard, power supply and multimeter. You use the breadboard

More information

Exercise 3: Voltage in a Series Resistive Circuit

Exercise 3: Voltage in a Series Resistive Circuit DC Fundamentals Series Resistive Circuits Exercise 3: Voltage in a Series Resistive Circuit EXERCISE OBJECTIVE When you have completed this exercise, you will be able to determine the voltage in a series

More information

Electrical Measurements

Electrical Measurements Electrical Measurements INTRODUCTION In this section, electrical measurements will be discussed. This will be done by using simple experiments that introduce a DC power supply, a multimeter, and a simplified

More information

rheostat (about 100 ) multimeter

rheostat (about 100 ) multimeter 0BOhm's Law and Resistivity (approx. 2 h) (8/6/15) 1BIntroduction In this lab you will investigate simple DC (direct or constant current) circuits using a DC power supply, a multimeter and wire resistors.

More information

Series and Parallel Resistors

Series and Parallel Resistors Series and Parallel Resistors Today you will investigate how connecting resistors in series and in parallel affects the properties of a circuit. You will assemble several circuits and measure the voltage

More information