Question: An inductor (L = 50 H) is subjected to a time-varying current. The emf then produced by the inductor is graphed in Figure P21.70. The

An inductor (L = 50 μH) is subjected to a time-varying current. The emf then produced by the inductor is graphed in Figure P21.70. The initial current is 40 mA. Plot the corresponding current as a function of time. Assume the potential of the supply voltage is positive so that a decrease in current generates a positive voltage drop across the inductor.

E (V) 2.0 1.0 1 (s ) 4.0 2,0 3,0 4,0 1.0 -1.0 Figure P21.70

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