boylistad

N A
*49. Repeat Problem 48 for the networks of Fig. 8.123.
400 V
*50. Determine the current I for the network of Fig. 8.124.
*51. a. Replace the T configuration of Fig. 8.125 (composed
of 6-k� resistors) with a p configuration.
b. Solve for the source current I s1 .
5 A
I
I
2 k�
4 k�
3 k�
3 k�
FIG. 8.124
Problem 50.
3 k�
6 k�
3 k�
6 k�
4 k�
4 k�
3 k�
*52. a. Replace the p configuration of Fig. 8.126 (composed
of 3-k� resistors) with a T configuration.
b. Solve for the source current I s.
(a) (b)
FIG. 8.123
Problem 49.
42 V
E 1
+
–
I s
R s
I s1
I
10 V
1 k�
E 20 V
R 1
6 k�
18 �
R 3
6 k�
FIG. 8.125
Problem 51.
R 4
3 k�
PROBLEMS ⏐⏐⏐ 319
R 2
6 k�
R 3
3 k�
R 5
E 2
+
5 V
–
R 1 2 k� R 2 2 k�
FIG. 8.126
Problem 52.
6 � 6 �
18 �
6 �
18 �
3 k�