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The electric resistance of a certain wir...

The electric resistance of a certain wire of iron is `R`. If its length and radius are both doubled, then

A

the resistance will be doubled and the specific resistance will be halved

B

the resistance will be halved and the specific resistance will remain unchanged

C

the resistance will be halved and the specific resistance will be doubled

D

the resistance and the specific resistance will both remain unchanged

Text Solution

Verified by Experts

The correct Answer is:
B
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