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An arrangement of three parallel straigh...

An arrangement of three parallel straight wires placed perpendicular to plate of paper carrying same currents `i` along the same direction is shown in figure. Magnitude of force per unit length on the middle wire B is given by

A

`(mu_(0)i^(2))/(2 pi d)`

B

`(2mu_(0)i^(2))/(pi d)`

C

`(sqrt(2)mu_(0)i^(2))/(pi d)`

D

`(mu_(0)i^(2))/(sqrt(2)pi d)`

Text Solution

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The correct Answer is:
D
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