Which term describes an electrical flow that always moves in the same direction, from positive to negative?

Which term describes an electrical flow that always moves in the same direction, from positive to negative?

• A. Diode
• B. Direct Current
• C. Field (magnetic field)
• D. Inductance

Answer: (B)

Direct current describes electrical flow that moves in a single direction at all times. In DC, charge carriers move from the positive side toward the negative side, so the direction stays fixed over time. This is produced by sources like batteries and DC power supplies, and it contrasts with alternating current, where the direction reverses periodically. A diode is a device that can allow current to flow mainly in one direction, but it’s about a component’s behavior rather than the general flow itself. A magnetic field is not about current direction, it’s a field produced by moving charges or magnets. Inductance relates to resisting changes in current and storing energy, not the unidirectional nature of the flow. Direct current best describes the unidirectional flow.

Direct current describes electrical flow that moves in a single direction at all times. In DC, charge carriers move from the positive side toward the negative side, so the direction stays fixed over time. This is produced by sources like batteries and DC power supplies, and it contrasts with alternating current, where the direction reverses periodically. A diode is a device that can allow current to flow mainly in one direction, but it’s about a component’s behavior rather than the general flow itself. A magnetic field is not about current direction, it’s a field produced by moving charges or magnets. Inductance relates to resisting changes in current and storing energy, not the unidirectional nature of the flow. Direct current best describes the unidirectional flow.