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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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