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1. In given figure the switch was closed for a long time before opening at t = 0. The voltage Vx at t = 0+ is
(A): -50 V
(B): 0 V
(C): 25 V
(D): 50 V
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By: guest on 02 Jun 2017 01.06 am
at t = 0, L will act as short circuit hence I = 2.5 A. Vx = 2.5 x 20 50v, but in opposite to current source. Hence Vx = - 50v.
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