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Two identical wires A and B have the sam...

Two identical wires A and B have the same length l and 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_1 and B_2` are the values of magnetic induction at the centre of the circle and the centre of the square, respectively, then the ratio `B_1//B_2` 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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