define electric power.write an expression relating electric power potential different and resistance.
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Electric Power is the electric work done per unit time . P=W/T. Relation between electric power, potential difference, resistance is. P=V2/R.
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Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries.
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