What is the unit of frequency?

The unit of frequency is Hertz. Frequency is defined as the number of cycles of a periodic signal that occur in one second. Therefore, when we say something has a frequency of 1 Hertz, it means that one cycle occurs every second.

Hertz is derived from the name of Heinrich Hertz, a physicist who made significant contributions to the study of electromagnetic waves. In practical terms, you might encounter frequency when dealing with sound waves, radio waves, or any wave-like phenomena, where understanding how many oscillations occur can be crucial.

The other units listed—Watts, Joules, and Amperes—relate to different physical quantities. Watts measure power, Joules measure energy, and Amperes measure electric current, none of which pertain specifically to the concept of frequency.