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

  • question_answer Electric power is transmitted over long distances through conducting wires at high voltage because [MP PET 1994]

    A)            High voltage travels faster

    B)            Power loss is large

    C)            Power loss is less

    D)            Generator produced electrical energy at a very high voltage

    Correct Answer: C

    Solution :

               Power loss in transmission \[{{P}_{L}}=\frac{{{P}^{2}}R}{{{V}^{2}}}\] Þ \[{{P}_{L}}\propto \frac{1}{{{V}^{2}}}\]

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