Question

13. State Joule's law of heating. Write different forms of enerey and power.
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Answer 1

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A quantitative form of Joule's law is that the heat evolved per second, or the electric power loss, P, equals the current I squared times the resistance R, or P = I2R. The power P has units of watts, or joules per second, when the current is expressed in amperes and the resistance in ohms.

Answer 2

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