Question

Draw a diagram showing inductance in an AC circuit with the voltage and current waveform.

Hint:

To easily remember lagging phase angles: think of the word ELI. In an Inductor ($L$), Emf (Voltage) leads the Inductive current. Because current lags voltage by exactly $90^\circ$ in a pure inductor, the average power dissipated over a complete cycle is zero ($P_{avg} = V_{rms} I_{rms} \cos(90^\circ) = 0\text{ W}$).

Answer 1