Determine the direction of the magnetic field due to current carrying coils held in the north-south direction and the flow of current is anticlockwise.

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North to south

South to north

East to west

West to east

answer is C.

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Detailed Solution

The direction of the magnetic field is due to current-carrying coils held in the north-south direction, and the current flow is counterclockwise from east to west.
A conductor carrying current creates a magnetic field around it because moving charges generate magnetic fields proportional to the current. The magnetic field produced by a conductor carrying current varies with its current and the distance to the point. The direction of the magnetic field is perpendicular to the wire. The direction in which the fingers would curl if you wrapped your right hand's fingers around the wire with your thumb pointing in the direction of the current would indicate the direction of the magnetic field. When the coil is placed in the north-south direction, and the current direction is counterclockwise, according to the right-hand thumb rule, the direction of the magnetic field will be east to west.

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