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A metallic wire of resistance 20 ohm str...

A metallic wire of resistance 20 ohm stretched until its length is doubled. Its resistances is

A

`20 ohm`

B

`40 ohm`

C

`80 ohm`

D

`60 ohm`

Text Solution

Verified by Experts

The correct Answer is:
C
`R = (rhol)/A , V = A.l`
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