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Two thin long parallel wires separated b...

Two thin long parallel wires separated by a distance 'a' are carrying current I amp each . The magnitude of the force per unit length excited by one wire on the other is

A

`(mu_(0)I^(2))/a^(2)`

B

`(mu_(0)I^(2))/(2 pi a) `

C

`(mu_(0)I)/(2 pi a) `

D

`(mu_(0)I)/(2 pi a^(2))`

Text Solution

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The correct Answer is:
b
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