Rapid current changing direction is known as?

Rapid current changing direction is known as?

• A. Direct Current (DC)
• B. Pulsing Current
• C. Alternating Current (AC)
• D. Synchronous Current

Answer: (C)

Alternating current is current that reverses direction at regular intervals. This back-and-forth flow means the polarity changes in a rhythmic way, unlike direct current, which moves in one fixed direction. The speed of those reversals is the frequency, measured in hertz; in household power, this happens 50 or 60 times per second depending on the region. Pulsing current describes bursts that rise and fall in magnitude but don’t necessarily reverse direction, so it isn’t about changing direction itself. Synchronous current isn’t a standard way to describe reversing direction and is more about timing with another signal, not a continuous change in direction.

Alternating current is current that reverses direction at regular intervals. This back-and-forth flow means the polarity changes in a rhythmic way, unlike direct current, which moves in one fixed direction. The speed of those reversals is the frequency, measured in hertz; in household power, this happens 50 or 60 times per second depending on the region. Pulsing current describes bursts that rise and fall in magnitude but don’t necessarily reverse direction, so it isn’t about changing direction itself. Synchronous current isn’t a standard way to describe reversing direction and is more about timing with another signal, not a continuous change in direction.