Which of the following best describes the term 'Frequency' in electrical terms?

The term 'Frequency' in electrical terms refers to the number of cycles per second of an alternating current (AC) signal. It is measured in hertz (Hz), where one hertz signifies one cycle per second. Understanding frequency is crucial in power systems as it affects how electrical equipment operates and interacts with the grid. For example, electrical appliances are designed to operate at specific frequency levels—such as 60 Hz in the United States or 50 Hz in Europe—ensuring compatibility and efficiency.

In electrical systems, the rate of energy consumption is related to power and is not directly associated with frequency. Total power supplied is measured in watts and does not describe frequency, while peak load pertains to the maximum power demand on a distribution system, which is also a separate concept unrelated to frequency. Therefore, defining frequency as the number of cycles per second accurately captures its essential role in electrical theory and applications.