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    If the diameter of a conductor is double, then its resistance will be reduced
    Question

    If the diameter of a conductor is double, then its resistance will be reduced

    A.

    Half

    B.

    One-fourth

    C.

    One-eight

    D.

    One-sixteenth

    Correct option is B


    If the diameter of a conductor is doubled, its resistance will be reduced to one-fourth. 
    Explanation: Resistance is inversely proportional to the cross-sectional area of a conductor. When the diameter is doubled, the cross-sectional area increases four times, resulting in a resistance that is one-fourth of the original value. 

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