Direct Current is characterized by what property?

• A. The electrons flow in alternating directions.
• B. The electrons flow only when a battery is connected.
• C. It is produced by alternating current.
• D. The electrons flow constantly, uninterrupted, in one direction.

Answer: (D)

Direct current is defined by a steady, unidirectional flow of electric charge. In a DC circuit powered by a battery, electrons are pushed in one direction, from the negative terminal toward the positive, producing a constant flow that does not reverse. This contrasts with alternating current, where the direction of flow reverses periodically. The statement that best captures DC is that the electrons move constantly, uninterrupted, in one direction. The other ideas describe alternating behavior, rely on a battery in a vague way, or claim DC is produced by alternating current, which isn’t true. So the key property of direct current is its constant, unidirectional flow.