Question: Problem 4 : The switch in the circuit shown below has been closed for a long time and is opened at t = 0 .

Problem 4:
The switch in the circuit shown below has been closed for a long time and is opened at t=0. Find the initial current through the inductor, i.e.,i(0); the time-constant for t>0; the current through the inductor i(t) for t>0; the initial energy stored in the inductor.
Problem 4 : The switch in the circuit shown below

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