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Two identical wire A and B, each of leng...

Two identical wire A and B, each of length ‘l ’, carry the same current I. Wire A is bent into a circle of radius R and wire B is bent to form a square of side ‘a’. If `B_(A)` and `B_(B)` are the values of magnetic field at the centres of the circle and square respectively, then the ratio `(B_(A))/(B_(B))` is:

A

`(pi^2/8)`

B

`(pi^2/(8sqrt2))`

C

`(pi^2/16)`

D

`(pi^2/(16sqrt2))`

Text Solution

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The correct Answer is:
B
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