Which of the following is an SI unit of power?

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Multiple Choice

Which of the following is an SI unit of power?

Explanation:
Power is the rate at which energy is transferred or work is done. In the SI system, the unit for power is the watt, defined as one joule per second. In electrical terms, power also equals voltage times current, so power in watts is voltage multiplied by current (P = V × I). That means a device rated at 60 watts uses 60 joules of energy every second. The other terms don’t measure power in the SI system: horsepower is a traditional unit of power (not SI), while volt and coulomb measure electric potential and electric charge, respectively. So the correct choice is the watt.

Power is the rate at which energy is transferred or work is done. In the SI system, the unit for power is the watt, defined as one joule per second. In electrical terms, power also equals voltage times current, so power in watts is voltage multiplied by current (P = V × I). That means a device rated at 60 watts uses 60 joules of energy every second. The other terms don’t measure power in the SI system: horsepower is a traditional unit of power (not SI), while volt and coulomb measure electric potential and electric charge, respectively. So the correct choice is the watt.

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