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

  • question_answer An external resistance R is connected to a battery of e.m.f. V and internal resistance r. The joule heat produced in resistor R is maximum when R is equal to                                              [MP PET 2001]

    A)             r    

    B)            \[\frac{r}{2}\]

    C)            2r   

    D)            Infinitely large

    Correct Answer: A

    Solution :

               For maximum joule heat produced in resistor external resistance = Internal resistance.

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