Alternating Current (AC)

Definition

Alternating current is an electric current that periodically reverses direction. It constantly changes its magnitude and flows back and forth within the circuit.

Related terms

Direct Current (DC): An electric current that flows in only one direction, typically produced by batteries or power supplies.

Frequency: The number of complete cycles of an alternating current per second, measured in Hertz (Hz).

Amplitude: The maximum value or magnitude of an alternating current or voltage.