An inductor has an inductance of 200 mH. The back e.m.f. produced when the current through it changes at 2 A/s is:
A) 0.2 V
B) 0.4 V
C) 2 V
D) 4 V

Question

Quizplus · Accepted Answer

The back e.m.f. (voltage) produced by an inductor can be calculated using the formula V = L(di/dt), where L is the inductance in henries and di/dt is the rate of change of current in amperes per second. Substituting the given values, V = 0.2 H * 2 A/s = 0.4 V.

An Inductor Has an Inductance of 200 MH