Railways General Science & Technology Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर Sample Paper Current Electricity Sample Test Paper-9

  • question_answer
    Electric power is transmitted over long distances through conducting wires at high voltage because

    A)  High voltage travels faster

    B)  Power loss is large

    C)  Power loss is less

    D)  Generator produce electrical energy at a very high voltage

    Correct Answer: C

    Solution :

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


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