MAGNETIC FIELDS
2 marks · EasyExplain why magnetic field lines never cross each other.
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Common mistakes: They do cross sometimes.; Because of the magnet's shape.
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Marking points
B1 · 1 mark · States that each point in the field has only one direction.
B2 · 1 mark · Explains that crossing would mean two directions at one place, which is impossible.
Worked solution
Magnetic field lines never cross because at every point in space, the magnetic field has only one direction. If lines crossed, it would mean two directions at one point, which is not possible for a magnetic field.