A constant current flows in a horizontal wire in the plane of the pape

1.	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 the magnetic field at a point will be North to South (a) directly above the wire (b) directly below the wire (c) at a point located in the plane of the paper, on the north side of the wire (d) at a point located in the plane of the paper, on the south side of the wire
Answer» The answer is (b) directly below the wire By applying right hand thumb rule we can find that direction of magnetic field is from North to South below the wire.

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 the magnetic field at a point will be North to South (a) directly above the wire (b) directly below the wire (c) at a point located in the plane of the paper, on the north side of the wire (d) at a point located in the plane of the paper, on the south side of the wire

Answer»

The answer is (b) directly below the wire

By applying right hand thumb rule we can find that direction of magnetic field is from North to South below the wire.