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A current I flows around a closed path i...

A current I flows around a closed path in the horizontal plane of circle as shown in the figure The path consists of eight arcs with alternating radii r and `2r` . Each segment of arc subtends equal angle at the common centre `P` The magnetic field produced by current path at point `P` is
.

A

`(3)/(8)(mu_(0)I)/(r)` , perpendicular to the plane of the paper and directed inward

B

`(3)/(8)(mu_(0)I)/(r)` , perpendicular to the plane of the paper and directed outward

C

`(1)/(8)(mu_(0)I)/(r )` , perpendicular to the plane of the paper and directed inward

D

`(1)/(8)(mu_(0)I)/(r )` , perpendicular to the plane of the paper and directed outward

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The correct Answer is:
A
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