A current 
flows around a closed path in the horizontal plane of the circle as shown in the figure. The path consists of eight arcs with alternating radii 
and 
. Each segment of arc subtends equal angle at the common center P. The magnetic field produced by current path at point 
is
A
;perpendicular to the plane of the paper and directed inward. B
;perpendicular to the plane of the paper and directed outward. C
; perpendicular to the plane of the paper and directed inward. D
; perpendicular to the plane of the paper and directed outward.
Text Solution
Verified by ExpertsThe correct answer is:
A
due to straight parts of the wire is zero.
Each arc subtends an angle
, perpendicular to the plane of the paper and directed inward.
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