A circular loop is kept in that vertical...

A circular loop is kept in that vertical plane which contains the north- south direction. It carries a current that is towards north at the topmost point. Let A be a point on the axis of the circle to the east of it and B a point on this axis to the west of it. The magnetic field due to the loop.

is towards east at `A` and towards west to `B`

is towards west at `A` and towards to east `B`

is towards east to both `A` and `B`

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