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The resistance of a wire is 2 Omega. The...

The resistance of a wire is `2 Omega`. The wire is stretched to doubel its length. Now the resistance of the wire will become

A

`0.25R`

B

`0.5R`

C

`2R`

D

`4R`

Text Solution

Verified by Experts

The correct Answer is:
D
`R_(2)=n^(2)R_(1)=2^(2)xxR=4 R`
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