Electrical power is measured in which of the following units?

Electrical power is measured in watts. This unit represents the rate at which electrical energy is transferred by an electric circuit. One watt is defined as one joule per second, and it quantifies how much energy is used or generated per unit of time. Understanding this concept is crucial for troubleshooting and designing electrical systems, as it helps technicians determine how much power a device consumes or produces within power ratings.

The other units mentioned relate to different aspects of electricity. Volts measure the electrical potential difference or pressure in the circuit, amperes measure the flow rate of electric charge (current), and watt-hours represent a measure of energy over time rather than power itself. Thus, while all these terms are essential in electronics, only watts accurately describes electrical power.