Page 148 - Schaum's Outline of Theory and Problems of Electric Circuits

FIRST-ORDER CIRCUITS
CHAP. 7]

Fig. 7-13 137

Fig. 7-14

For t < 0; i ¼ 2 A and v ¼ 0
di 30t
30t
For t > 0; i ¼ 4 2e ðAÞ and v ¼ L ¼ 6e ðVÞ
dt
and plotted in Figs. 7-15(d) and (e).

þ
EXAMPLE 7.10 Find i and v for t ¼ 0 and t ¼ 0 in the circuit of Fig. 7-16, given R ¼ 5
, L ¼ 10 mH, and

5 V for t < 0
v s ¼
5 sin !t ðVÞ for t > 0