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प्रश्न
State the S.I. unit of power.
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उत्तर
Electric power is the rate at which an electric circuit transfers electrical energy per unit of time.
The SI unit of power is the watt, one joule per second
`P = "work"/"time in Secs" = w/t`
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संबंधित प्रश्न
A boy of mass 40 kg climbs up the stairs and reaches the roof at a height 8 m in 5 s. Calculate:
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(ii) the power developed by them.
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(ii) How much energy would be required in lifting the drum into the truck without the plank?
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