Question

6. The resistance of a given wire is 24 ohm . What will be it's new resistance if (a) only the length of a conductor is increased to 3 time of it's original length , and (b) only the cross - section area of the wire is doubled ?​

Answer 1

Answer:

a:- resistivity increased by 3 times

b:-resistivity becomes half

Explanation:

this also proved that resistivity is directly proportional to length because when length become 3 times larger than resistivity also increased ...and

resistivity is inversly proportional to area because when area increased by 2 times than resistivity also decreased.

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