What unit is electrical power measured in?

Electrical power is measured in watts. This unit represents the rate at which electrical energy is transferred or converted in a circuit. One watt is defined as one joule of energy per second, and it can also be understood as the product of voltage (in volts) and current (in amperes) in an electrical system.

Understanding electrical power is crucial because it indicates how much energy is being consumed or produced over time. For example, when you see a light bulb rated at a certain number of watts, that number tells you how much electrical power the bulb will use when it is operating. This information is vital for various applications, including designing circuits, selecting appropriate components, and estimating energy costs.

The other units listed—ohms, volts, and amperes—represent different electrical properties: ohms measure resistance, volts measure electrical potential or voltage, and amperes measure current flowing in a circuit. While all these units are related to electricity, watts specifically measure power, thereby making it the correct answer in this context.