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A cylindrical conductor of length l and ...

A cylindrical conductor of length l and uniform area of cross section A has resistance R. Another conductor of length 2.5l and resistance 0.5R of the same material has an area of cross section

A

5A

B

2.5A

C

0.5A

D

`1/5A`

Text Solution

Verified by Experts

Here `R=(rho l)/A and 0.5R=(rho(2.5l))/A. implies A.=5A`
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