Which term describes current that always flows in one direction?

Which term describes current that always flows in one direction?

• A. Alternating Current (AC)
• B. Frequency
• C. Direct Current (DC)
• D. Hertz

Answer: (C)

Direct current is the type of current that keeps its flow in one direction. In DC, electrons move steadily in a single direction, such as what you get from a battery. Alternating current, by contrast, reverses direction periodically, which is why it’s called alternating current. The term frequency—or its unit, Hertz—describes how often those direction changes occur each second, not a constant one-way flow. So DC best fits the description of current that always flows in one direction.

Direct current is the type of current that keeps its flow in one direction. In DC, electrons move steadily in a single direction, such as what you get from a battery. Alternating current, by contrast, reverses direction periodically, which is why it’s called alternating current. The term frequency—or its unit, Hertz—describes how often those direction changes occur each second, not a constant one-way flow. So DC best fits the description of current that always flows in one direction.