Which unit measures electrical power?

The unit that measures electrical power is the Watt. Power in an electrical context is defined as the rate at which electrical energy is transferred by an electric circuit. One Watt is equivalent to one Joule per second, which means it represents the amount of energy used or produced over a specific amount of time.

In practical terms, when you think about how appliances or devices consume energy, the Watt is the standard measurement used to indicate how much power a device requires to operate. For instance, a light bulb rated at 60 Watts consumes 60 Joules of energy every second. This makes the Watt a critical unit in both electrical engineering and everyday usage when evaluating how energy-efficient a device may be.

The other units mentioned relate to different aspects of electrical systems: volts measure electrical potential, amperes measure current flow, and ohms quantify resistance. Each of these plays important roles in electrical circuits, but it is the Watt that specifically pertains to the measurement of electrical power.