Which statement describes a circuit that carries direct current?

Which statement describes a circuit that carries direct current?

• A. An AC circuit
• B. A DC circuit
• C. A load
• D. A conductor

Answer: (B)

Direct current flows in one direction only, producing a steady, unidirectional flow. A circuit that carries direct current is described as a DC circuit because it uses a DC power source like a battery or a DC power supply. In contrast, an AC circuit carries current that periodically reverses direction, which is why it’s not DC. A load is simply a device that uses electrical energy, and a conductor is any material that lets current pass; neither alone specifies the current’s direction. So the statement that describes a circuit carrying direct current is a DC circuit.

Direct current flows in one direction only, producing a steady, unidirectional flow. A circuit that carries direct current is described as a DC circuit because it uses a DC power source like a battery or a DC power supply. In contrast, an AC circuit carries current that periodically reverses direction, which is why it’s not DC. A load is simply a device that uses electrical energy, and a conductor is any material that lets current pass; neither alone specifies the current’s direction. So the statement that describes a circuit carrying direct current is a DC circuit.