What term describes current flowing in one direction along a conductor?

The term that describes current flowing in one direction along a conductor is Direct Current. In direct current (DC) systems, the flow of electric charge is unidirectional, meaning the electrons move in a constant direction, away from the negative terminal to the positive terminal of a power source. This steady flow allows for consistent voltage and is typically used in battery-operated devices, electronics, and various medical imaging technologies in radiology.

Other options explore different aspects of electric current. Alternating Current (AC), for instance, is characterized by the periodic reversal of direction, which is commonly used for power distribution in homes and businesses. Conventional Current refers to the flow of positive charge and is typically used in circuit analysis, but it does not specifically address the unidirectional flow of electrons. Voltage Current is not a standard term in electrical theory and does not accurately represent a type of current flow. Thus, the defining characteristic of Direct Current aligns perfectly with the question regarding the unidirectional flow of electric charge.