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

  • question_answer Electric room radiator which operates at 225 volts has resistance of 50 ohms. Power of the radiator is approximately                                                                      [SCRA 1994]

    A)            100 W                                      

    B)            450 W

    C)            750 W                                      

    D)            1000 W

    Correct Answer: D

    Solution :

               \[P=\frac{{{V}^{2}}}{{{R}_{{}}}}=\frac{{{(225)}^{2}}}{50}=1012.5\approx 1000\,\,W\]

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