Question

A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in Figure. The direction of magnetic field at a point will be North to South

Options

• directly above the wire

• directly below the wire

• at a point located in the plane of the paper, on the north side of the wire

• at a point located in the plane of the paper, on the south side of the wire

Answer 1

directly below the wire

Explanation - 

If we observe the direction of the magnetic field by applying right-hand thumb rule then, we will find that the direction of the magnetic field is from North to South below the wire.