AC power frequency is measured in Hertz, which represents the number of oscillations per second.
The frequency of AC power is measured in Hertz (Hz).
Hertz is defined as the number of oscillations per second. In alternating current (AC) circuits, the frequency represents the number of times the current changes direction in a second.
For example, household AC power in the US has a frequency of 60 Hz, indicating that the current reverses direction 60 times per second.
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