A circular coil of radius 3cm has 50 turns. It is placed on the horizontal plane and a current of 3A flows through it in clockwise direction as seen from above. Calculate the magnetic field at a point on the axis of the coil, at a distance of 4cm from its centre. Also indicate the direction of the magnetic field.

A circular coil of radius 3cm has 50 turns. It is placed on the horizo

1.	A circular coil of radius 3cm has 50 turns. It is placed on the horizontal plane and a current of 3A flows through it in clockwise direction as seen from above. Calculate the magnetic field at a point on the axis of the coil, at a distance of 4cm from its centre. Also indicate the direction of the magnetic field.
Answer» Solution :`6.78 XX 10^(-4) T`, vertically DOWNWARD

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