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There are three copper wires of length a...

There are three copper wires of length and cross-sectional area (L,A),(2L,A/2)(L/2,2A). In which case in the resistance minimum?

A

wire of cross-sectional area 2A

B

wire of cross-sectional area 1/2 A

C

wire of cross - sectional area A

D

Same in all three cases

Text Solution

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The correct Answer is:
A
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