Electric Circuits and Networks, Ist Edition by Pearson

169

5.1 LINEARITY OF A CIRCUIT AND SUPERPOSITION THEOREM

10 V

R

1

i

2v

x

v

x

+

+

+

–

–

–

R

2

2 Ω

R

3

2 Ω

2 Ω

Fig. 5.1-11 Circuit with

only the First Voltage

Source Acting in

Example 5.1-5

(a)

R

5 V

R

1

i

2v

x

v

x

v

1

i

1

i

2

+

+

+

–

–

–

(b)

2 A

R

1

R

2

i

2v

x

v

x

+

+

–

–

2 Ω

2 Ω

R

3

2 Ω

R

3

2 Ω

2 Ω

R

2

2 Ω

Fig. 5.1-12 Circuits

with only (a) the

Second Voltage

Source Acting and

(b) only the Current

Source is Acting in

Example 5.1-5

Find the power dissipated in the resistor R

2

in the circuit in Fig. 5.1-10 by applying

Superposition theorem.

SOLUTION

First, let us find the current through R

2

by applying Superposition Theorem. The single-

source circuit when the first voltage source is acting is shown in Fig. 5.1-11.

This circuit ...