JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors Question Bank Heating Effect of Current

  • question_answer The heat developed in an electric wire of resistance R by a current I for a time t is             [MP PMT 1993; MP PET 2005]

    A)            \[\frac{{{I}^{2}}Rt}{4.2}cal\]  

    B)            \[\frac{{{I}^{2}}t}{4.2R}cal\]

    C)            \[\frac{{{I}^{2}}R}{4.2\,t}cal\]                                           

    D)            \[\frac{Rt}{4.2\,{{I}^{2}}}cal\]

    Correct Answer: A

    Solution :


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