# REVIEW QUESTIONS. Figure 2.63 For Review Question 2.6. Figure 2.64 For Review Question The reciprocal of resistance is:

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1 EVIEW QUESTIONS 2.1 The reciprocl of resistnce is: () voltge () current (c) conductnce (d) couloms 2.2 An electric heter drws 10 A from 120-V line. The resistnce of the heter is: () 1200 () 120 (c) 12 (d) " 3 V 6 " Figure 2.63 For eview Question 2.6. I 2.3 The voltge drop cross 1.5-kW toster tht drws 12 A of current is: () 18 kv () 12 (c) 120 V (d) V 2.4 The mximum current tht 2W, 80 k resistor cn sfely conduct is: () 160 ka () 40 ka (c) 5 ma (d) 25 µa 2.5 A network hs 12 rnches nd 8 independent loops. How mny nodes re there in the network? () 19 () 17 (c) 5 (d) The current I in the circuit in Fig is: () 0.8 A () 0.2 A (c) 0.2 A (d) 0.8 A 2.7 The current I o in Fig is: () 4 A () 2 A (c) 4 A (d) 16 A 2 A 10 A I o 4 A Figure 2.64 For eview Question 2.7.

2 2.8 In the circuit in Fig. 2.65, V is: () 30 V () 14 V (c) 10 V (d) 6 V 10 V 2.9 Which of the circuits in Fig will give you V = 7 V? 12 V 8 V V 3 V 3 V Figure 2.65 For eview Question V 1 V () () 2.10 The equivlent resistnce of the circuit in Fig is: () 4 k () 5 k (c) 8 k (d) 14 k 3 V 3 V 2 k" 3 k" 1 V (c) 1 V (d) eq 6 k" 3 k" Figure 2.67 For eview Question Figure 2.66 For eview Question 2.9. Answers: 2.1c, 2.2c, 2.3, 2.4c, 2.5c, 2.6, 2.7, 2.8d, 2.9d, 2.10.

3 Section 2.2 Ohm s Lw 2.1 The voltge cross 5-k resistor is 16 V. Find the current through the resistor. 2.2 Find the hot resistnce of lightul rted 60 W, 120 V. 2.3 When the voltge cross resistor is 120 V, the current through it is 2.5 ma. Clculte its conductnce. 2.4 () Clculte current i in Fig when the switch is in position 1. () Find the current when the switch is in position Determine the numer of rnches nd nodes in the circuit in Fig " 4 " i 5 " 5i 10 V " 6 " 100 " i 150 " 3 V Figure 2.71 For Pro Figure 2.68 For Pro. 2.4.

4 Section 2.4 Kirchhoff s Lws 2.8 Use KCL to otin currents i 1,i 2, nd i 3 in the circuit shown in Fig In the circuit in Fig. 2.76, otin,, nd v ma 2 10 V 1 8 ma i 2 i 1 9 ma i 3 20 V v 3 Figure 2.72 For Pro Figure 2.76 For Pro Find i 1,i 2, nd i 3 in the circuit in Fig Find nd in the circuit in Fig A 2 A 6 V v 1 12 V 10 V 10 A i 1 3 A i 2 i 3 Figure 2.77 For Pro Figure 2.73 For Pro. 2.9.

5 2.17 Determine i o in the circuit of Fig Otin through v 3 in the circuit of Fig i o 4 " v 1 36 V 5i o 24 V 12 V Figure 2.78 For Pro v 3 10 V 2.15 Find I nd V in the circuit of Fig " 10 V 5 " 30 V V I 8 V Figure 2.79 For Pro Figure 2.81 For Pro Clculte the power dissipted in the 5- resistor in the circuit of Fig " V o 5 " Figure 2.82 For Pro V o 2.19 Find V o in the circuit in Fig nd the power dissipted y the controlled source. 4 " V o 10 A 6 " 2V o Figure 2.83 For Pro

6 Sections 2.5 nd 2.6 Series nd Prllel esistors 2.22 For the circuit in Fig. 2.86, find i 1 nd i Find,, nd v 3 in the circuit in Fig " i 1 i 2 20 ma 6 k" 4 k" 40 V 15 " v 3 10 " Figure 2.86 For Pro Find nd in the circuit in Fig Figure 2.88 For Pro Clculte,i 1,, nd i 2 in the circuit of Fig k" 4 " 6 " i 1 i 2 24 V 9 k" 12 V 3 " Figure 2.87 For Pro Figure 2.89 For Pro

7 2.28 Find i 1 through i 4 in the circuit in Fig In the circuit of Fig. 2.97, find if V o = 4V. 10 i 4 i i 3 i V " 6 V o " 20 A Figure 2.97 For Pro Find the equivlent resistnce t terminls - for ech of the networks in Fig Figure 2.92 For Pro Otin v nd i in the circuit in Fig i 4 S 6 S 9 A S 2 S " 3 S () () (c) Figure 2.93 For Pro (d) (e) Figure 2.99 For Pro

8 2.37 If eq = 50 in the circuit in Fig , find Find eq t terminls - for ech of the circuits in Fig eq Figure For Pro Clculte the equivlent resistnce t terminls - for ech of the circuits in Fig () () () Figure For Pro

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