Assume that the switch in the circuit shown in Fig. 7.19 has been in position b for a

Chapter 7, Problem 7.5

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Assume that the switch in the circuit shown in Fig. 7.19 has been in position b for a long time, and at it moves to position a. Find (a) (b) (c) (d) and (e) t 0+ v(t), . v(0 t, t 7 0; i(t), t 0; + i(0 ); +); t = 0 Answer: (a) 12 A; (b) (c) 20 ms; (d) (e) t 0+ -200e . -50t V, -8 + 20e t 0; -50t A

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