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A material 'B' has twice the specific re...

A material 'B' has twice the specific resistance of 'A'. A circular wire made of 'B' has twice the diameter of a wire made of 'A'. Then for the two wires to have the same resistance, the ratio `l_(B)//l_(A)` of their respective lengths must be

A

1

B

`1//2`

C

`1//4`

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
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