A current carrying circular loop of radius R is placed in the x-y plane with centre at the origin. Half of the loop with x > 0 is now bent so that it now lies in the y - z plane.
at (0.0.z), z >> R increases.
at (0.0.z) z >> R is unchanged.
Text Solution
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For a circular loop of radius R carrying current I placed in x-y plane the magnetic moment 
it acts perpendicular to the loop i.e. along z-direction when half of the current loop is bent in y-z plane, then magnetic moment due to half current loop in x-y plane 
acting along z-direction.
Magnetic moment due to half current loop in y-z plane 
along x-direction
Effective magnetic moment due to entire bent current loop,
i.e. magnetic moment diminishes
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