What unit is used to measure electrical power?

The unit used to measure electrical power is the Watt (W). Power in an electrical context refers to the rate at which energy is consumed or produced in an electrical circuit. The Watt is defined as one joule per second and is a standard unit in the International System of Units (SI) for measuring power.

When considering the context of power in electrical systems, it can be calculated using the formula P = IV, where P is power in watts, I is current in amperes, and V is voltage in volts. This fundamental relationship highlights the role of watts in quantifying how much energy is being used over time, which is vital for assessing electrical consumption and efficiency in various applications.

Other units listed in the question serve different purposes: the kilovolt (kV) measures voltage, the ohm (Ω) measures resistance, and the volt (V) measures electric potential. Understanding these distinctions helps clarify the specific role of the watt in electrical power measurement.