When discussing the frequency of electricity, what does it refer to?

Frequency in the context of electricity specifically refers to the number of complete cycles that occur in one second, which is measured in hertz (Hz). A complete cycle signifies a full waveform of alternating current (AC), where the waveform oscillates from a positive peak to a negative peak and back to the positive peak. This cyclical nature is fundamental in AC electricity as it determines how often the current alternates direction.

Understanding frequency is crucial for various applications, such as matching the frequency of electrical devices to ensure compatibility. Low frequency indicates fewer cycles per second, while high frequency indicates more cycles, affecting how devices operate and interact with the electrical supply. The other options refer to different concepts related to electricity, such as voltage peaks and current flow, but they do not accurately define what frequency means in this context.