1.

A cylindrical conductor of length l and uniform area of cross section A has resistance R. Another conductor of length 2l and resistance R of the same material has an area of cross section

Answer»

`A/2`
`(3A)/2`
`2A`
`3A`

SOLUTION :Here `R=(RHO l)/A=(rho(2L))/A. implies A.=2A`


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