A single circular (radius = R) loop of wire is located in the yz plane with its center at the origin. The loop has a clockwise current as seen from the point (+R, 0, 0). The direction of the magnetic field at the point
A.
and at the point (+R, 0, 0) is ?
.B.
and at the point (0, +2R, 0) is ?.C.
and at the point (+R, 0, 0) is +.D.
and at the point (0, +2R, 0) is +.E.
Answer: A
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