What is the definition of frequency in electrical terms?

Frequency in electrical terms specifically refers to the number of cycles that occur in one second. It is a fundamental concept in electrical engineering and physics, particularly in the context of alternating current (AC) systems. Frequency is measured in hertz (Hz), where one hertz corresponds to one cycle per second.

Understanding frequency is essential for working with power systems and electronic devices because it dictates how quickly the alternation occurs, affecting the performance and compatibility of electrical equipment. For instance, devices are generally designed to operate at specific frequencies (like 50 or 60 Hz), and a mismatch can lead to reduced efficiency or failure.

The other choices do not accurately represent the definition of frequency. Voltage, current, and degrees per cycle relate to different electrical properties but do not define how often a waveform completes a cycle.