7.4 AC V OLTAGE A PPLIED TO AN I NDUCTOR

. AC V OLTAGE A PPLIED TO AN I NDUCTOR Figure . shows an ac source connected to an inductor. Usually, inductors have appreciable resistance in their windings, but we shall assume that this inductor has negligible resistance. Thus, the circuit is a purely inductive ac circuit. Let the voltage across the source be v = v m sin ω t . Using the Kirchhoff’s loop rule, ( )