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

  • question_answer A current of 2 A passing through conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is [CBSE PMT 1993]

    A)            \[0.5\,\Omega \]                

    B)            \[2\,\Omega \]

    C)            \[4\,\Omega \]                   

    D)            \[20\,\Omega \]

    Correct Answer: B

    Solution :

               \[H={{i}^{2}}Rt\] Þ \[R=\frac{H}{{{i}^{2}}t}=\frac{80}{4\times 10}=2\,\,\Omega \]


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