What is the basic unit of electrical power?

The basic unit of electrical power is the Watt. The Watt quantifies the rate at which energy is transferred or converted in an electrical circuit. It is defined as one joule per second and can be expressed in terms of other electrical units: one Watt equals one Volt times one Ampere. This relationship highlights how power depends on both voltage and current in a circuit, emphasizing the critical role that all three units—voltage, current, and power—play in understanding electrical systems.

Other options pertain to different electrical concepts: the Coulomb is a unit of electric charge, the Ohm is a unit of electrical resistance, and the Volt is a unit of electric potential. Each of these units relates to different aspects of electricity, but only the Watt specifically measures the rate of energy use or power, which is essential for assessing how much work an electrical device can perform in a given timeframe. This makes the Watt the correct and fundamental unit of electrical power in various applications.