Draw a diagram to show the field lines around a bar magnet.
Important Questions on Magnetism
Two bar magnets are placed side by side a shown.
Copy the diagram and show the force the two magnets exert on each other. State whether they will attract or repeal each other.
Two bar magnets are placed side by side a shown.
One of the magnets is reversed so that its north pole is where its south Pole was. Draw this new situation and show the forces the two magnets now exert on each other.
Iron is often described as a 'soft' magnetic material. Many types os steel are described as 'hard' magnetic materials.
Explain the difference between these two types of material.
Iron is often described as a 'soft' magnetic material. Many types of steel are described as 'hard' magnetic materials.
Explain why a permanent magnet should be made of steel rather than iron.
