0195136047.pdf

96 CIRCUIT ANALYSIS TECHNIQUES

2.1.10(a) Consider the Wheatstone bridge circuit given
in Figure P2.1.10(a) and find the Thévenin
equivalent with respect to terminalsa–b.

(b) Suppose a source with resistance is connected

acrossa–b, as shown in Figure P2.1.10(b).

Then find the currentIab.

2.2.1In the circuit given in Figure P2.2.1, determine the

currentIthrough the 2-resistor by (a) the nodal-

voltage method, and (b) mesh-current analysis.

2.2.2Consider the circuit of Figure P2.2.2 and rearrange

it such that only one loop equation is required to

solve for the currentI.

a

b

2 Ω

4 Ω

2 Ω 2 Ω

4 A

10 V

12 V

+

+

−

−

Figure P2.1.8

a′

b′

a

b

R 1 R 3

R 2

2 Ω

+

−

V 1

Figure P2.1.9

ab

+

−

12 V

4 Ω

6 Ω

12 Ω^3 Ω

(a)

Figure P2.1.10

a + − b

5 V

5 Ω

(b)

2 Ω I

2 A 1 Ω 1 A

3 A

4 A

3 Ω

Figure P2.2.1