What type of current is characterized by electrons moving in one direction?

• A. Alternating current (AC)
• B. Pulsating current
• C. Reactive current
• D. Direct current (DC)

Answer: (D)

Direct current describes a unidirectional flow of electrons, moving steadily in one direction from the negative to the positive terminal. This constant direction is what sets DC apart. In contrast, alternating current reverses direction periodically, so the electrons effectively move back and forth rather than forward in one steady path. Pulsating current typically remains in one direction but varies in magnitude, yet the key idea here is the single, steady direction of flow. Reactive current relates to energy storage in inductors or capacitors and is a concept tied to AC phase relationships, not simply one-way electron movement. So the type characterized by electrons moving in one direction is Direct current.