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12. Define power and energy in an electric circuit and state units. In whichthey are measured.14.

Answer»

Energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object. SI unit : joule

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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