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A square loop of edge 'a' carries a curr...

A square loop of edge 'a' carries a current l. The magnetic field at the centre of loop is

A

`(mu_(0)l)/(2 sqrt2 pi a)`

B

`(2sqrt2 mu_(0)l)/(pi a)`

C

`(mu_(0)l)/(sqrt2pi a)`

D

`(mu_(0)lsqrt2)/(pi a)`

Text Solution

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The correct Answer is:
B
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