In electrical terms, what does the watt measure?

The watt is a unit of measurement specifically defined as the rate of energy consumption or power in an electrical circuit. When one watt is defined, it represents one joule of energy consumed or converted per second. This means it quantifies how quickly energy is being used or transferred in a given system.

In practical terms, if you have an electrical device rated at 100 watts, it indicates that the device consumes energy at a rate of 100 joules per second. Understanding this is crucial for calculating energy usage, determining capacity needs for electrical circuits, and managing energy efficiency.

The other choices do not accurately describe what a watt measures: voltage is measured in volts, resistance is measured in ohms, and frequency is measured in hertz. Each of these is a distinct electrical property that does not correlate with the concept of power or the watt as a measurement unit.