What unit is frequency measured in?

Frequency is measured in Hertz, which is the standard unit that quantifies the number of cycles per second of a periodic wave. In the context of electrical systems, frequency is crucial because it determines how often an alternating current (AC) signal oscillates in one second. For instance, in North America, the standard frequency for electrical power systems is 60 Hertz, meaning the current changes direction 60 times every second.

Understanding the role of frequency is important for applications in electrical engineering and communications, where the behavior of circuits, transmission of signals, and the functioning of various devices all heavily depend on the specified frequency of operation. This makes recognizing Hertz as the unit of frequency not only correct but essential for comprehending how electrical systems operate at a fundamental level.