Alternating Current (AC)

Definition

Alternating current refers to the flow of electric charge that periodically reverses direction. It changes magnitude and direction over time, typically following a sinusoidal waveform.

Related terms

Frequency:

The number of complete cycles per second in an alternating current waveform.

Transformer:

A device that changes the voltage of an alternating current by electromagnetic induction.

Rectifier: A device that converts alternating current into direct current.