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A rectangular loop of metallic wire is o...

A rectangular loop of metallic wire is of length a and breadth b and carries a current i. The magnetic field at the centre of the loop is

A

`(mu_(0)i)/(4pi)`

B

`(mu_(0)i)/(4pi)(4sqrt(a^(2)+b^(2)))/(ab)`

C

`(mu_(0)i)/(4pi)(2sqrt(a^(2)+b^(@)))/(ab)`

D

`(mu_(0)i)/(4pi)(sqrt(a^(2)+b^(2)))/(ab)`

Text Solution

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The correct Answer is:
A
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