What is the unit of measurement for electrical power?

The unit of measurement for electrical power is the watt. The watt is defined as the rate at which energy is transferred or converted, equivalent to one joule per second. In the context of electrical systems, power can be calculated using the formula P = VI, where P represents power in watts, V represents voltage in volts, and I represents current in amperes. This relationship illustrates how power can be derived from both voltage and current, reinforcing the primary role of the watt as the standard unit for measuring electrical power.

The other options represent different electrical quantities; voltage is measured in volts, which represents the electric potential difference; current is measured in amperes, indicating the flow of electric charge; and resistance is measured in ohms, quantifying how much a material opposes the flow of electric current. Each of these units plays a vital role in understanding electrical circuits, but they are not measurements for power itself, which is specifically expressed in watts.