Q1. The switch in the circuit has been closed for a long time before opening at t=0. t = 0 4Ω 1.5 N 12.45 N 48 V 18 2 0.5 H 54 2 26 Q 2Ω 10 Ω a) Find ia(t) and in(t) for t20. b) Find the initial energy stored in the 0.5H inductor

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