What does Hertz (Hz) measure in electrical currents?

Hertz (Hz) is a unit of measurement that quantifies frequency, specifically in the context of electrical currents. It indicates how many cycles of alternating current (AC) occur per second. One Hertz is equivalent to one cycle per second. This is fundamental in electrical engineering because the frequency of AC power affects the performance of electrical devices, including motors, transformers, and many electronic components.

Understanding the frequency is crucial for applications such as determining the operating speed of synchronous motors or ensuring compatibility between different electrical systems. In contrast, voltage, amperage, and resistance pertain to other properties of electrical circuits, each serving distinct functions. Therefore, recognizing Hertz as a measure of frequency helps clarify its role in the broader context of electrical engineering and technology.