First slide

Magnetic field due to a current carrying circular ring

Question

The figure shows a current carrying loop. Then select the correct option.

Moderate

A

Magnetic field at O is directed inward.
B

Magnetic field at A is directed inward
C

Magnetic field at B is directed outward
D

Magnetic field at A is directed outward.

Solution

Since the current in the loop is clockwise, the magnetic dipole moment of the loop is directed inward. Therefore at points A and O direction of magnetic fields are outward.

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