Describe an activity to draw a magnetic field line outside a bar magnet from one pole to another pole.

Objective should be replaced with observation.

Aim:- To demonstrate how magnetic field is drawn outside a bar magnet from one pole to another pole.

Material required:- A small compass, bar magnet, sheet of white paper, drawing board, adhesive material.

Procedure:- Take a small compass and a bar magnet.
Place the magnet on a sheet of white paper fixed on a drawing board, using some adhesive material.
Mark the boundary of the magnet.
Place the compass near the north pole of the magnet. The south pole of the needle points towards the north pole of the magnet. The north pole of the compass is directed away from the north pole of the magnet.
Mark the position of two ends of the needle.
Now move the needle to a new position such that its South Pole occupies the position previously occupied by its North Pole.
In this way, proceed step by step till you reach the south pole of the magnet.
Join the points marked on the paper by a smooth curve. The curve represents a magnetic field line.

Observation:- we observe the magnetic field line outside a bar magnet points towards north to south.

Conclusion:- The magnetic field line outside a bar magnet points towards north to south.