Page 430

CHAP. 16]

THE LAPLACE TRANSFORM METHOD 

16.43

In the circuit of Fig. 16-31, ig ¼

1A cos t

t<0 . Find v and i for t > 0 and compare with results of Problems t>0

16.41 and 16.42. Ans:

v ¼ 0:6667et  0:0185e2:5t þ 0:8305 cos ðt  48:48Þ; t > 0 i ¼ 0:3332et  0:0368e2:5t þ 0:2626 cos ðt  66:88Þ; t > 0

16.44

Find capacitor voltage vðtÞ in the circuit shown in Fig. 16-32. Ans: v ¼ 20  10:21e4t cos ð4:9t þ 11:538Þ; t > 0

Fig. 16-32

16.45

419

Find inductor current iðtÞ in the circuit shown in Fig. 16-32. Ans: i ¼ 10  6:45e4t cos ð4:9t  39:28Þ; t > 0

Mahmood_Nahvi_eBook_Schaum_s_Outlines_Theory_An