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

  • question_answer An electric bulb is rated 60W, 220V. The resistance of its filament is                                          [MP PET 2003]

    A)            708 W                                      

    B)            870 W

    C)            807 W                                      

    D)            780 W

    Correct Answer: C

    Solution :

               \[R=\frac{{{V}^{2}}}{P}=\frac{{{(220)}^{2}}}{60}=807\,\Omega \]

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