Question

A circular loop of wire with a radius of 20 cm lies in the xyplane and carries a current of 2 A, counterclockwise when viewed from a point on the positive zaxis. Its magnetic dipole moment is:
A) 0.25 A.m2, in the positive zdirection
B) 0.25 A.m2, in the negative zdirection
C) 2.5 A.m2, in the positive zdirection
D) 2.5 A.m2, in the negative zdirection
E) 0.25 A.m2, in the xyplane

Answer

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