What unit is used to express electrical power?

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Multiple Choice

What unit is used to express electrical power?

Explanation:
Power in an electrical system is measured in watts. The watt is the SI unit for power and is defined as one joule per second. In many circuits, power is calculated as the product of voltage and current: P = V × I. So if something has 5 volts across it and draws 2 amperes, it uses 10 watts of power. The other units measure different quantities: the ampere is current, the volt is voltage, and the ohm is resistance. Kilowatts are simply larger units for bigger amounts of power.

Power in an electrical system is measured in watts. The watt is the SI unit for power and is defined as one joule per second. In many circuits, power is calculated as the product of voltage and current: P = V × I. So if something has 5 volts across it and draws 2 amperes, it uses 10 watts of power. The other units measure different quantities: the ampere is current, the volt is voltage, and the ohm is resistance. Kilowatts are simply larger units for bigger amounts of power.

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