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Q.

Is it true that the resistance of a conductor is directly proportional to its length $(L)$ as R ∝ L?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
"The resistance of a conductor is directly proportional to its length (L) as

R \propto L

." Thus, doubling its length will double its resistance while halving its length would halve its resistance. The relation between resistivity and length is given by the resistivity formula. Resistance is directly proportional to the length. This means that any change in the length of the material will change its value of resistance.

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