Question

Explain about magnetic field lines around a bar magnet experiment.

Answer 1

The lines of magnetic field from a bar magnet form closed lines. ... The strongest external magnetic fields are near the poles. A magnetic north pole will attract the south pole of another magnet, and repel a north pole. The magnetic field lines of a bar magnet can be traced out with the use of a compass.

Answer 2

The magnetism causes the magnetic field and the magnetic field lines are imaginary lines which represent the magnetic field.

The following are the steps in the bar magnet experiment:

1. Fix a white paper on the drawing board.

2. Place the bar magnet in the centre.

3. Sprinkle magentic fillings on the paper.

4. Gently strike the board.

Observation of the bar magnet experiment:

The iron filings align in along the magnetic field lines. The following are the properties of magnetic field lines.

1. The magnetic lines never merge.

2. The magnetic lines are always in a loop.

3. More lines appear in the dense magnetic field.

On using the compass, one can find the direction of magnetic field lines. The magnetic lines originate in the north pole and end at south pole.