A horizontal circular loop carries a current that looks clockwise when viewed from above. It is replaced by an equivalent magnetic dipole consisting of a south pole S and a north pole N.
A. The line SN should be along a diameter of the loop.
B. The line SN should be perpendicular to the plane of the loop.
C. The south pole should be below the loop.
D. The north pole should be below the loop.
Clockwise current is equivalent to a south pole. hence, the SN line should be perpendicular to the plane of the loop with South above the loop and north below it. Thus options B and D are correct.
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