Joule law of heating
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When a current of I (amperes) passes through a circuit of resistance R (ohms)\xa0for a time of t (seconds) then the heat produced is given by the relation\xa0H=I2Rt (joules)This relation is known as Joule’s law of heating. It states that the heat produced is proportional to (i) the square of the current I, (ii) resistance of the circuit R, and (iii) the time t during which the current flows through the circuit.