A single current carrying loop of wire carrying current I flowing in an anticlockwise direction seen from +ve z direction and lying in xy plane is shown in the figure. The plot of jˆ component of magnetic field (By) at a distance ′ a ′ (less than the radius of the coil) and on yz plane vs z coordinate looks like
in-plane of the coil
is opposite of each other in -z and +z positions.
So the graph will be like
So correct answer will be
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