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

  • question_answer A bulb has specification of one kilowatt and 250 volts, the resistance of bulb is                                  [MP PMT 2002]

    A)            125 W                                      

    B)            62.5 W

    C)            0.25 W                                     

    D)            625 W

    Correct Answer: B

    Solution :

               \[R=\frac{{{V}^{2}}}{P}=\frac{{{(250)}^{2}}}{{{10}^{3}}}=62.5\,\Omega \]

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