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SECTION 8.4 Current Sources in Parallel
9. Find the voltage V2 and the current I1 for the network of
Fig. 8.101.
10. a. Convert the voltage sources of Fig. 8.102 to current
sources.
b. Find the voltage Vab and the polarity of points a and b.
c. Find the magnitude and direction of the current I.
7 A
R1 4 � R2 +
6 �V2 3 A
I1 –
FIG. 8.101
Problem 9.
11. For the network of Fig. 8.103:
a. Convert the voltage source to a current source.
b. Reduce the network to a single current source, and
determine the voltage V 1.
c. Using the results of part (b), determine V 2.
d. Calculate the current I 2.
SECTION 8.6 Branch-Current Analysis
12. Using branch-current analysis, find the magnitude and
direction of the current through each resistor for the networks
of Fig. 8.104.
4 V E 1
4 �
R 1
2 �
R 2
R3 8 � E 6 V
2
R 1
E 1
E 1
R 1
3 �
9 V
I
R 2
E 2
2 �
R3 6 � 12 � R4 8 mA
4 �
10 V
FIG. 8.104
Problems 12, 17, 25, and 54.
FIG. 8.102
Problem 10.
(a) (b)
20 V
a
b
FIG. 8.103
Problem 11.
PROBLEMS ⏐⏐⏐ 311
V ab
+ –
V2 R2 2.2 k�
+
V1R1 –
6.8 k� 3 mA 12 V
R 2
E 2
3 �
12 V
R 3
12 �
I 2