Chapter 3 Nodal and Mesh Equations - Circuit Theorems

Chapter 3 Nodal and Mesh Equations - Circuit Theorems

3.14 Exercises

Multiple Choice

1. The voltage across the 2 ? resistor in the circuit of Figure 3.67 is

A. 6 V

B. 16 V

C. ¨C 8 V

D. 32 V

E. none of the above

+

?

6V

+

2?

?

8A

8A

Figure 3.67. Circuit for Question 1

2. The current i in the circuit of Figure 3.68 is

A. ¨C 2 A

B. 5 A

C. 3 A

D. 4 A

+

?

E. none of the above

4V

2?

2?

+

?

10 V

2?

2?

i

Figure 3.68. Circuit for Question 2

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Exercises

3. The node voltages shown in the partial network of Figure 3.69 are relative to some reference

node which is not shown. The current i is

A. ¨C 4 A

B. 8 ? 3 A

C. ¨C 5 A

D. ¨C 6 A

E. none of the above

6V

+

?

4V

8V

8V

2?

?

+

12 V

2?

i

+

?

6V

8V

13 V

2?

Figure 3.69. Circuit for Question 3

4. The value of the current i for the circuit of Figure 3.70 is

A. ¨C 3 A

B. ¨C 8 A

C. ¨C 9 A

D. 6 A

E. none of the above

6?

12 V

+

3?

6?

?

i

8A

3?

Figure 3.70. Circuit for Question 4

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Chapter 3 Nodal and Mesh Equations - Circuit Theorems

5. The value of the voltage v for the circuit of Figure 3.71 is

A. 4 V

B. 6 V

C. 8 V

D. 12 V

E. none of the above

+

+

2A

2?

vX

?

2?

+ 2v

X

?

v

?

Figure 3.71. Circuit for Question 5

6. For the circuit of Figure 3.72, the value of k is dimensionless. For that circuit, no solution is possible if the value of k is

A. 2

B. 1

C. ¡Þ

D. 0

E. none of the above

+

2A

4?

v

4?

+ kv

?

?

Figure 3.72. Circuit for Question 6

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Exercises

7. For the network of Figure 3.73, the Thevenin equivalent resistance R TH to the right of terminals

a and b is

A. 1

B. 2

C. 5

D. 10

E. none of the above

a

3?

2?

2?

4?

R TH

2?

2?

b

2?

Figure 3.73. Network for Question 7

8. For the network of Figure 3.74, the Thevenin equivalent voltage V TH across terminals a and b is

A. ¨C 3 V

B. ¨C 2 V

C. 1 V

D. 5 V

E. none of the above

?

+

a

2V

2?

2?

2A

b

Figure 3.74. Network for Question 8

Circuit Analysis I with MATLAB Applications

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Chapter 3 Nodal and Mesh Equations - Circuit Theorems

9. For the network of Figure 3.75, the Norton equivalent current source I N and equivalent parallel

resistance R N across terminals a and b are

A. 1 A, 2 ?

B. 1.5 A, 25 ?

C. 4 A, 2.5 ?

D. 0 A, 5?

E. none of the above

a

5?

2A

5?

2A

b

Figure 3.75. Network for Question 9

10. In applying the superposition principle to the circuit of Figure 3.76, the current i due to the 4 V

source acting alone is

A. 8 A

B. ¨C 1 A

C. 4 A

D. ¨C 2 A

E. none of the above

i

2?

2?

8A

2?

+ 4V

?

Figure 3.76. Network for Question 10

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