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.
1
The magnitude of magnetic moment now diminishes.
2
The magnetic moment does not change.
3
The magnitude of B at (0.0.z), z >>R increases.
4
The magnitude of B at (0.0.z), z >>R is unchanged.