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784 ⏐⏐⏐ METHODS OF ANALYSIS AND SELECTED TOPICS (ac)<br />

I 1 = 2 A ∠ 30°<br />

I 1 = 3 A ∠ 0°<br />

5 �<br />

+<br />

E = 30 V ∠ 50°<br />

–<br />

4 �<br />

6 �<br />

(a)<br />

1 �<br />

4 �<br />

4 �<br />

5 �<br />

(a)<br />

(a)<br />

2 �<br />

2 �<br />

5 �<br />

4 �<br />

I 2<br />

3 A ∠ 150°<br />

8 �<br />

SECTION 17.5 Nodal Analysis<br />

14. Determine the nodal voltages for the networks of Fig.<br />

17.71.<br />

I 2 = 5 A ∠ 30°<br />

FIG. 17.71<br />

Problems 14 and 39.<br />

I = 0.04 A ∠ 90°<br />

+<br />

E = 50 V ∠ 120°<br />

–<br />

FIG. 17.72<br />

Problem 15.<br />

4 �<br />

FIG. 17.73<br />

Problem 20.<br />

15. Determine the nodal voltages for the networks of Fig.<br />

17.72.<br />

16. Determine the nodal voltages for the network of Fig.<br />

17.63(b).<br />

17. Determine the nodal voltages for the network of Fig.<br />

17.64(b).<br />

*18. Determine the nodal voltages for the network of Fig.<br />

17.65(a).<br />

*19. Determine the nodal voltages for the network of Fig.<br />

17.65(b).<br />

*20. Determine the nodal voltages for the networks of Fig.<br />

17.73.<br />

I 1<br />

3 �<br />

4 �<br />

10 �<br />

4 A ∠ 0°<br />

6 �<br />

2 �<br />

5 � 4 �<br />

(b)<br />

(b)<br />

2 �<br />

I 2 = 4 A ∠ 80°<br />

I 1 = 0.6 A ∠ 20°<br />

10 �<br />

(b)<br />

8 �<br />

4 �<br />

2 �<br />

8 �<br />

6 � 8 �<br />

N A<br />

I = 0.8 A ∠ 70°<br />

I 2 = 6 A ∠ 90°

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