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The electric resistance of a certain wire of iron is  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



Question ID - 151021 | SaraNextGen Top Answer

The electric resistance of a certain wire of iron is  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

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

 specific resistance doesn’t depend upon length, and radius

127 votes


127