What is the SI unit of power?
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A.
Volt (V)
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B.
Ampere (A)
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C.
Watt (W)
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D.
Joule (J)
Correct Answer:
C. Watt (W)
Explanation:
The SI unit of power is the watt (W). Power is defined as the rate at which work is done or energy is transferred over time, expressed by the formula P = W / t. One watt is equivalent to one joule of energy per second (1 J/s). While the volt measures electric potential, the ampere measures current, and the joule measures energy, the watt specifically quantifies the rate of energy consumption or production. The unit is named after the Scottish inventor James Watt for his contributions to the development of the steam engine.
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