UPSC Physics Electric Current and Magnetism Question Bank Electricity, Magnetism and Light

  • question_answer
          The main power supply in India is at 220 V, whereas that in the US is at 110 V. Which one among the following statements in this regard is correct?                               [NDA]

    A) 110 V is safer but more expensive to maintain

    B) 110 V is safer and cheaper to maintain

    C) 110 V leads to lower power loss

    D) 110 V works better at higher latitudes

    Correct Answer: A

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