In the circuit shown, in switch S is open for a long time and is closed at t = 0. The current i(t) for t ≥ 0+ is

1. 

In the circuit shown, in switch S is open for a long time and is closed at t = 0. The current i(t) for t ≥ 0+ is

7-04-32
[A]. i(t) = 0.5 - 0.125e-1000t A
[B]. i(t) = 1.5 - 0.125e-1000t A
[C]. i(t) = 0.5 - 0.5e-1000t A
[D]. i(t) = 0.375e-1000t A

Answer: Option A

Explanation:

i(f) = 0.5, i(i) = 0.75

i(t) = Vr + (ii - ij)e-1/p = 0.5 - 0.125e-1000t .

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