What is the typical unit for measuring frequency?

Frequency is fundamentally defined as the number of occurrences of a repeating event per unit of time. The standard unit for measuring frequency in the International System of Units (SI) is Hertz (Hz), which is equivalent to one cycle per second. This unit is widely used in various fields, including electrical engineering and telecommunications, where it describes the frequency of alternating current (AC) signals, among other applications.

Kilohertz can be considered a derivative of Hertz, where one kilohertz equals one thousand hertz. While it is indeed used for measuring higher frequencies, it is essentially a factor of the Hertz measurement and not the base unit itself.

Ohms are units that measure electrical resistance, and milliamps measure electric current, neither of which relate directly to frequency. Thus, while the other choices may refer to important concepts in electrical and electronic measurements, Hertz is the true standard unit for frequency, making it the correct answer to this question.