Q. 44.0( 4 Votes )

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
A. is towards east at A and towards west at B

B. is towards west at A and towards east at B

C. is towards east at both A and B

D. is towards west at both A and B.

Answer :

If the current is directed towards north at the topmost point of that circular loop that means, from point A’s perspective, current is in clockwise direction and will cause a magnetic field which is moving inwards i.e. to the west at point A and subsequently to the west at point B.


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