The resistance of a wire, of length 'l', is R Ω. The wire is stretched to double its length keeping the volume constant. The resistance of the wire will become?

R/2 Ω

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4R Ω

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2R Ω

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R/4 Ω

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Solution

The correct option is B
4R Ω

.

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The resistance of a wire, of length 'l', is R Ω. The wire is stretched to double its length keeping the volume constant. The resistance of the wire will become?

The correct option is B 4R Ω .

The correct option is B
4R Ω

.