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A cylindrical wire of length L and radius r has a resistance R. The resistance of another wire of same material but of twice its length and twice its
Question

A cylindrical wire of length L and radius r has a resistance R. The resistance of another wire of same material but of twice its length and twice its radius is:

A.

R/2

B.

2R

C.

4R

D.

R

Correct option is A



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