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If a wire of resistance R is melted and ...

If a wire of resistance `R` is melted and recasted in to half of its length, then the new resistance of the wire will be

A

`(R)/(4)`

B

`(R)/(2)`

C

`R`

D

`2R`

Text Solution

Verified by Experts

The correct Answer is:
A
`Rpropl^(2)`
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