Basic Electricity 30 Hour - Part Issue: US40/30/a-IQ-040A Copyright 004,. No part of this Publication may be adapted or reproduced in any material form, without the prior written permission of. Written by: LJ Technical Dept
Assignment Static Electricity Complete the diagrams with the appropriate charges on the swinging balls. Complete the statement about charges. Like charges and unlike charges. Explain why your hair may stand on end when you take off a sweatshirt...................... SW.
Explain how you think lightning is generated. The space is provided for a diagram..................................... Assignment Uses of Electrostatics Complete a detailed description in your own words of an application that uses electrostatics. Use diagrams where necessary to support your description. Application:....................................... SW.
Supporting Diagrams Assignment 3 Dangers of Electrostatic Charge Draw a labeled diagram in the space below to show how static electricity caused the incident. SW.3
Assignment 4 Electric Current Describe what you think is happening when you place the capacitor in the circuit with the battery, in the circuit with the lamp and in the short circuit......................... Describe what you think is happening when the capacitor is added to the circuit below. V F.................................... SW.4
Assignment 5 Voltage Complete the diagram to show voltage readings. 6V Assignment 6 Resistance Complete the table below with the measured resistance value for each component on the Basic Electricity trainer. Component Generator/Motor Relay Coil Resistor Heater Lamp LP Lamp LP Lamp LP3 Switch S3 Open Switch S3 Closed Resistance Value (Ohms) SW.5
Assignment 7 Relationship Between Voltage, Current, and Resistance Record the values for circuit measurements. Voltage =... Current =... Resistance =... Complete the table with the calculated and measured current values for the specified resistor values for the following circuit. Diagram - Circuit to test Ohm's law and Ohm's law triangle.5 volt Battery Resistor Value (Ω) Calculated Current (amps) Measured Current (amps) 5 0 50 00 6 volt Battery Resistor Value (Ω) Calculated Current (amps) Measured Current (amps) 5 0 50 00 SW.6
9 volt Battery Resistor Value (Ω) Calculated Current (amps) Measured Current (amps) 5 0 50 00 Assignment 8 Cells in Series Draw a schematic diagram of a flashlight circuit in the space provided, labeling each component. Complete the table with readings from the circuit. Number of Batteries Voltage (volts) Current (amps) 3 4 SW.7
Assignment 9 Batteries in Parallel Complete the tables with the results of your experiment. Number of Series Circuit Parallel Circuit Batteries Voltage Current Voltage Current 3 4 Complete the table with the results of your experiment with varying numbers of batteries in parallel. A A A3 Number of Batteries 3 Current A Current A Current A 3 Assignment 0 Switches Draw a schematic diagram of the circuit with a lamp and single toggle switch. SW.8
Draw a schematic diagram of the circuit with a lamp and two toggle switches in series. Complete the series circuit table. Switch S3 S4 Lamp Open Open Off Open Closed Closed Open Closed Closed Complete the diagram of a single pole double throw switch circuit..9 S5.3 B B +. V.8.34 LP.49.45 LP.5.47.5 SW.9
Copy the two way house lighting circuit into the space provided. Assignment Switches in Parallel Complete the diagram to show the switches connected in parallel. BATTERIES. +. SWITCHES PUSH TO MAKE S.3.4.5.6 LAMPS.45.46 LP.47.48 + - B 6V.3 _.4 PUSH TO BREAK S.7.8.9.0 CLOSED.49.50.5.5 LP + - B 6V.5 +.6.7 _.8 S3...3.4 OPEN CLOSED S4.5.6.7.8 OPEN.3.3.53.54.55.56 LP3 S5.9.30.33.34 Complete the parallel circuit table. Switch S3 S4 Lamp Open Open Off Open Closed Closed Open Closed Closed SW.0
Assignment Resistors in Series Describe how you calculate the total resistance of a set of series connected resistors. Complete the table to show the measured values of resistance from the trainer. Connection Points a to b b to c c to d d to e a to e Calculated a to e 00Ω Resistance in Ohms Use this space to perform any working out required. 80Ω 60Ω V A SW.
Assignment 3 Resistors in Parallel Write the formula and the example for equal value resistors in parallel in the space provided. Write the formula and the example for unequal value resistors in parallel in the space provided. Use the following space for any calculations you need to make. SW.
Assignment 4 Switching with Light Complete the circuit diagram of the light sensor circuit. + - BATTERIES B 6V. +..3 _.4.5 +.6 SWITCHES PUSH TO MAKE S.3.4.5.6 PUSH TO BREAK S.7.8.9.0 CLOSED S3...3.4 BUZZER +.73.74 BZ.75 + - B 6V.7 _.8 OPEN CLOSED S4.5.6.7.8 OPEN.3.3.76 _ S5.9.30.33.34 LIGHT - ACTIVATED SWITCH.63.64.65.66.67.68 SENSOR Complete the circuit diagram of the modified light sensor circuit. BATTERIES SWITCHES LAMPS. +. PUSH TO MAKE S.3.4.5.6.45.46 LP.47.48 + - B 6V.3 _.4 PUSH TO BREAK S.7.8.9.0 CLOSED.49.50.5.5 LP + - B 6V.5 +.6.7 _.8 S3...3.4 OPEN CLOSED S4.5.6.7.8 OPEN.3.3 S5.33.34.9.30.53.54 LP3.55.56 LIGHT - ACTIVATED SWITCH.63.64.65.66.67.68 SENSOR SW.3
Assignment 5 Heating Complete the circuit diagram for the home heating system. BATTERIES. +. SWITCHES PUSH TO MAKE S.3.4.5.6 LAMPS.45.46 LP.47.48 + - B 6V.3 _.4 PUSH TO BREAK S.7.8.9.0 CLOSED.49.50.5.5 LP + - B 6V.5 +.6.7 _.8 S3...3.4 OPEN CLOSED S4.5.6.7.8 OPEN.3.3.53.54.55.56 LP3 HEATER AND THERMOSTAT.77.78 S5.9.30.33.34.79.80.8.8.83.84 HEATER.85.86 SENSOR Complete the table with your results (see how to complete your table if you are unsure how to complete it). Status Time On/Off Duration (seconds) On start Off start On: Off time On time On start Off: On time Off time Off start On: Off time On time On 3 start Off: On 3 time Off time Off 3 start On: Off 3 time On 3 time On 4 start Off: On 4 time Off 3 time SW.4
How to complete your table Example table Status Time On/Off Duration (seconds) On start 0.00 Off start min sec On: 7 Off time On time On start min 30 sec Off: 78 On time Off time Off start 3 min 45 sec On: 75 Off time On time On 3 start 5 min 04 sec Off: 79 On 3 time Off time In the example, the heater is on as the stopwatch is started. When the stopwatch showed min secs, the heater switched off. When the stopwatch showed min 30 secs, the heater switched on again. This process is repeated to fill the table. The duration is calculated by the difference between the on and off times. To calculate how long the heater is off for the first time, calculate the difference between when it switched off (Off ) and when it switched on again (On ). On was at min 30 sec, Off was at min sec. The difference between these is min 8 sec (78 seconds). Write notes on resistance. List household items that produce heat from electricity. )... )... 3)... 4)... 5)... 6)... 7)... 8)... SW.5
Basic Electricity 30 Hour - Part Issue: US40/30/b-IQ-040A Copyright 004,. No part of this Publication may be adapted or reproduced in any material form, without the prior written permission of. Written by: LJ Technical Dept
Assignment 6 Conductors and Insulators Complete the table to show the conductivity of sample materials. Material Material Type Conductor / Insulator Copper Metal Brass Steel Aluminum Nylon PVC Acrylic Rubber Hardboard Softwood Hardwood Ceramic Fiber Glass Write a conclusion about the relationship between material and conductivity..... Complete the table to show if the objects are conductors or insulators and make any notes you feel are necessary. Object Conductor or Insulator (Circle one) Crayon Conductor Insulator Eraser Conductor Insulator Paper Conductor Insulator Wood block Conductor Insulator Plastic spoon Conductor Insulator Metal scissors Conductor Insulator Metal paper clip Conductor Insulator Wrench Conductor Insulator Gold ring Conductor Insulator Coin Conductor Insulator Pencil Conductor Insulator Pickle Conductor Insulator Notes SW.
Assignment 7 Alternating Current Complete the table with current readings. Connection point.59 a b c d e.58 Current reading (ma) Draw a graph of current readings. SW.
Draw a graph to show alternating current cycles. - Assignment 8 Protective Devices Complete the table to show the effect of using fuses in a circuit. Note: For effect on the lamp, choose between 'stays on', 'goes off' or 'blows up'. For effect on the fuse, choose between 'remains intact' and 'burns out'. Fuse value Effect on lamp Effect on fuse No fuse amp.5 amps amps 3 amps 4 amps 5 amps 7.5 amps 0 amps SW.3
Complete the table to show the effect of using circuit breakers in a circuit. Note: For effect on the lamp, choose between 'stays on', stays off' or 'blows up'. For effect on the circuit breaker, choose between 'remains on' and 'trips'. Circuit breaker value Effect on lamp Effect on circuit breaker No circuit breaker amp amps 5 amps 0 amps Assignment 9 Protective Devices Describe the different types of GFCI. Receptacle Type Circuit Breaker Type SW.4
Portable Type Draw a diagram to show how double insulation works. Assignment 0 Magnetism Complete the diagram showing the magnetic field lines round your magnet. S N SW.5
Complete the diagram showing the magnetic field lines round your magnet. S N N S S N S N Assignment Electromagnetic Fields Complete the diagrams to show the magnetic field lines that have been generated round the wire. SW.6
Complete the diagram to show the magnetic field lines around the coil. Assignment Relays Write the current measurements in the relay circuit. Current in the switch part of the circuit =...amps Current in the motor part of the circuit =...amps SW.7
Design your circuit on the diagram below. + - + - BATTERIES B 6V B 6V. +..3 _.4.5 +.6.7_.8 SWITCHES PUSH TO MAKE.3.4.5.6 PUSH TO BREAK S S.7.8.9.0 S3 CLOSED...3.4 OPEN S4 CLOSED.5.6.7.8 OPEN.3.3 S5.33.34.9.30 LAMPS.45.46 LP.47.48.49.50.5.5.53.54.55.56 RESISTOR.57.58 LP LP3 LIGHT - ACTIVATED SWITCH.63.64 INDICATORS BUZZER +.69.73.70.74 LP4 LP5 BZ.7.7.75.76 _ HEATER AND THERMOSTAT.77.78.79.80 GENERATOR / MOTOR.9.0.35.36 RELAY.39.40 e d c.6.65.66.8.8.4.4 b a.6.67.68.83.84...37.38.43.44.59.60 SENSOR HEATER.85.86 SENSOR Describe how your circuit operates. SW.8
Assignment 3 Uses of Electromagnets Complete the table to show how much mass the electromagnet can support. Number of turns of coil Masses lifted using battery pack Masses lifted using battery packs 0 50 750 000 Label the diagram of the speaker. Label the diagram of the maglev track. SW.9
Label the diagram of the television tube. Assignment 4 The Electric Motor Show the points of Fleming's Right Hand Rule. Complete the table with your current measurements in the appropriate columns. Test Position Motor Stationary Current (A) Motor Rotating Current (A) a b c d e SW.0
Draw a schematic diagram of the desk fan circuit. Assignment 5 Electric Generators Write down the generator principle. Complete the circuits around the magnets to show electrical current being produced. SW.
Draw a diagram to show one method of producing electricity that includes the use of a generator. Assignment 6 Transformers Draw a diagram of a step-up transformer and a step-down transformer. Step-up transformer Step-down transformer Draw a diagram of one particular electricity production technique that involves the use of a transformer. SW.
Assignment 7 Electrical Power Write down the measurements you have taken for current and voltage. Current through heater...amps Voltage across heater...volts Power = Voltage x Current Power of heater......watts Write down the formula for calculating energy in the space below. Complete the information relating to the appliances. Appliance Description: Rating: Usage: Energy used per month: Appliance Description: Rating: Usage: Energy used per month: Appliance 3 Description: Rating: Usage: Energy used per month: Appliance 4 Description: Rating: Usage: Energy used per month: SW.3
SW.4 Assignment 8 Paying for Electricity Complete the dial meter diagram with the reading 3695 as shown in the example in your assignment guide. 0 9 8 7 6 5 4 3 0 3 4 5 6 7 8 9 0 9 8 7 6 5 4 3 0 3 4 5 6 7 8 9 0 3 4 5 6 7 8 9 Complete the dial meter diagram with the reading 3704. 0 9 8 7 6 5 4 3 0 3 4 5 6 7 8 9 0 9 8 7 6 5 4 3 0 3 4 5 6 7 8 9 0 3 4 5 6 7 8 9 Use the following space for any calculations you need to make.
Write down the tips for saving energy. )...... )...... 3)...... 4)...... 5)...... 6)...... 7)...... 8)...... 9)...... Complete the table to show the monthly average kwh usage. Appliance Wattage (typical) Hours of use (monthly average) Air conditioner (6000 BTU) 750 70 Clothes dryer 5000 5 Clothes washer 500 40 Computer 00 60 Hair dryer 000 0 Kettle 500 8 Television 00 390 Video recorder 40 00 Water heater 3800 30 kwh (monthly average) SW.5
Assignment 9 Problem Solving, Part Use the following layout to design your circuit for the problem solving exercise. + - + - BATTERIES B 6V B 6V. +..3 _.4.5 +.6.7_.8 SWITCHES PUSH TO MAKE.3.4.5.6 PUSH TO BREAK S S.7.8.9.0 S3 CLOSED...3.4 OPEN S4 CLOSED.5.6.7.8 OPEN.3.3 S5.33.34.9.30 LAMPS.45.46 LP.47.49.5.53.55 RESISTOR.57.58.48.50.5.54.56 LP LP3 LIGHT - ACTIVATED SWITCH.63.64 INDICATORS BUZZER +.69.73.70.74 LP4 LP5 BZ.7.7.75.76 _ HEATER AND THERMOSTAT.77.78.79.80 GENERATOR / MOTOR.9.0.35.36 RELAY.39.40 e d c.6.65.66.8.8.4.4 b a.6.67.68.83.84...37.38.43.44.59.60 SENSOR HEATER.85.86 SENSOR Describe how your circuit will operate. SW.6
Assignment 30 Problem Solving, Part Make any necessary notes on the testing and evaluation of your circuit. Use the following layout to design your modified circuit for the problem solving exercise. + - + - BATTERIES B 6V B 6V. +..3 _.4.5 +.6.7_.8 SWITCHES PUSH TO MAKE.3.4.5.6 PUSH TO BREAK S S.7.8.9.0 S3 CLOSED...3.4 OPEN S4 CLOSED.5.6.7.8 OPEN.3.3 S5.33.34.9.30 LAMPS.45.46 LP.47.49.5.53 RESISTOR.57.58.48.50.5.54.55.56 LP LP3 LIGHT - ACTIVATED SWITCH.63.64 INDICATORS BUZZER +.69.73.70.74 LP4 LP5 BZ.7.7.75.76 _ HEATER AND THERMOSTAT.77.78.79.80 GENERATOR / MOTOR.9.0.35.36 RELAY.39.40 e d c.6.65.66.8.8.4.4 b a.6.67.68.83.84...37.38.43.44.59.60 SENSOR HEATER.85.86 SENSOR SW.7