Direct current (DC)

Definition

Direct current refers to the flow of electric charge in a circuit that only moves in one direction. It is characterized by a constant magnitude and polarity.

Related terms

Alternating current (AC): Alternating current is the flow of electric charge that constantly changes direction, typically used for household electricity.

Voltage: Voltage refers to the potential difference between two points in an electrical circuit, which drives the flow of electric charge.

Resistance:

Resistance is the measure of how much an object or material opposes the flow of electric current.