Aloop of wire carries a current. the resulting magnetic field . points toward the loop at all pointsb. points away from the loop at all pointsc. is similar to that of a bar magnet in the plane of the loopd. is similar to that of a bar magnet perpendicular to the plane of the loop

d-similar to that of a bar magnet perpendicular to the plane of the loop

Explanation:

Current is rate of flow of charge. Magnetic field due to a current carrying wire depends on the current in the wire and the distance of the point from the wire. The direction of the magnetic field is perpendicular to the wire. This is demonstrated in Flemming's Right hand rule

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

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