write the mathematical representation of joule's law and explain each term
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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.
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According to the Joule's law, when acurrent is passed through a conductor for a certain time, the conductor gets heated up and the amount of heat is given by : H=i2Rt. H is the heat, i is the current, R is the resistance and t is the time.
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