Page 68 - Schaum's Outline of Theory and Problems of Electric Circuits

ANALYSIS METHODS
CHAP. 4]

Fig. 4-33 57
4.18 Loop currents are shown in the network of Fig. 4-34. Write the matrix equation and solve for the three
currents. Ans. 3.55 A, 1:98 A, 2:98 A

Fig. 4-34

4.19 The network of Problem 4.18 has been redrawn in Fig. 4-35 for solution by the node voltage method. Ob-
tain node voltages V 1 and V 2 and verify the currents obtained in Problem 4.18.
Ans. 7.11 V, 3:96 V

Fig. 4-35

4.20 In the network shown in Fig. 4-36 current I 0 ¼ 7:5 mA. Use mesh currents to find the required source
voltage V s . Ans. 0.705 V

4.21 Use appropriate determinants of Problem 4.20 to obtain the input resistance as seen by the source voltage
V s . Check the result by network reduction. Ans: 23:5