What is AC current and DC current?

Question

Accepted Answer

AC current alternates direction periodically, while DC current flows in one direction constantly.

AC current changes direction periodically, typically used in household electricity.
DC current flows in one direction constantly, commonly used in batteries.
AC current is easier to transform voltage levels compared to DC current.
DC current is more efficient for long-distance power transmission.
Examples: AC - power outlets, DC - batteries.

Accepted Answer

Direct current (DC) occurs when the current flows in one constant direction. It usually comes from batteries, solar cells, or from AC/DC converters. DC is the preferred type of power for electronic devices. Alternating current (AC) occurs when the electric current periodically inverts its direction.

What is AC current and DC current?

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