|Before starting this module, you should be able to:||When you complete this module, you should be able to:|
Unless stated otherwise, discussions of inductive reactance in AC circuits assume a sinusoidal voltage source.
The current through an inductor lags the voltage applied to the inductor by 90°
|It is also
correct to say that the voltage applied to an inductor leads the current through the
inductor by 90°
The 90° phase difference between current and voltage of an inductor applies only to ideal inductorsinductors that have no internal resistance. The internal resistance of real-world inductors causes the phase difference to be something less than 90°.