What is the unit of power?

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Multiple Choice

What is the unit of power?

Explanation:
Power is the rate at which energy is transferred or work is done. The SI unit for power is the watt, defined as one joule per second. In electrical contexts, power is often found with P = V × I, meaning the device’s power rating in watts tells you how much energy it uses per second. For example, a 60-watt bulb uses 60 joules of energy every second it’s on. Coulombs measure electric charge, not power; Hertz measures frequency (cycles per second); and Volts measure electric potential difference, not power. Kilowatt-hours, while related to energy usage, are units of energy, not instantaneous power.

Power is the rate at which energy is transferred or work is done. The SI unit for power is the watt, defined as one joule per second. In electrical contexts, power is often found with P = V × I, meaning the device’s power rating in watts tells you how much energy it uses per second. For example, a 60-watt bulb uses 60 joules of energy every second it’s on.

Coulombs measure electric charge, not power; Hertz measures frequency (cycles per second); and Volts measure electric potential difference, not power. Kilowatt-hours, while related to energy usage, are units of energy, not instantaneous power.

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