How is the resistance of a wire affected if its radius is doubled

becomes one-fourth

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becomes half

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becomes twice

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becomes four times

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Solution

The correct option is A
becomes one-fourth

If the radius is doubled, resistance will become one-fourth

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Similar questions

How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled?

How is the resistance of a wire affected if its length is doubled?

ρ

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