Which term describes current that flows in a single direction?

Which term describes current that flows in a single direction?

• A. Pulsating Current
• B. Alternating Current
• C. Direct Current
• D. No Current

Answer: (C)

Direct current describes electric current that flows in one direction. In a DC circuit, the current maintains the same direction and polarity, like what you get from batteries or DC power supplies. This is different from alternating current, which reverses direction periodically. Pulsating current also flows in a single direction but varies in magnitude over time, typically arising from rectified AC, so it’s not a perfectly steady DC. No current means there is no flow at all, not a type of current. So, the term that best captures current moving in a single direction is direct current.

Direct current describes electric current that flows in one direction. In a DC circuit, the current maintains the same direction and polarity, like what you get from batteries or DC power supplies. This is different from alternating current, which reverses direction periodically. Pulsating current also flows in a single direction but varies in magnitude over time, typically arising from rectified AC, so it’s not a perfectly steady DC. No current means there is no flow at all, not a type of current. So, the term that best captures current moving in a single direction is direct current.