Which unit is used to measure electrical power?

The unit used to measure electrical power is the watt. Power in electrical systems is defined as the rate at which electrical energy is transferred by an electric circuit. One watt is equivalent to one joule per second and represents the amount of work or energy conversion happening in the system over a given period.

In an electrical context, power is calculated using the formula: Power (P) = Voltage (V) × Current (I), where voltage is measured in volts and current in amperes. This directly ties the concept of watts to the other units of electrical measurement. Understanding watts as a unit of power helps to grasp how electrical devices consume energy and how this consumption can impact electrical systems.

Other units like volts, ohms, and amperes measure different properties: volts measure electric potential, ohms measure resistance, and amperes measure current flow. Each has a distinct role in the understanding of electricity but does not directly measure power, which is specifically quantified as watts.