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JEE Main & Advanced Physics Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Question Bank Heating Effect of Current

  • question_answer
    In an electric heater 4 amp current passes for 1 minute at potential difference of 250 volt, the power of heater and energy consumed will be respectively                 [DPMT 2003]

    A)            1 kW, 60 kJ                             

    B)            0.5 kW, 30 kJ

    C)            10 kW, 600 kJ                         

    D)            None of these

    Correct Answer: A

    Solution :

                       Power \[P=Vi\,t=250\times 4=1000\,W=1kW\] Energy = P ´ t = 1 kW ´ 60 sec = 60 kJ


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