Magnetic fields
2 marks · NormalState what a magnetic field line represents and give two features shown by magnetic field lines around a magnet.
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Also accept: A magnetic field line represents the direction and path along which a free north pole would move in a magnetic field.; They show the shape of the field; they indicate direction (north to south); the density shows the strength; lines never cross.
Common mistakes: Saying field lines exist physically; Mixing up direction
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Marking points
B1 · 1 mark · Correctly defines magnetic field line
B2 · 1 mark · Gives two correct features (shape shown, direction, strength, do not cross, etc.)
Worked solution
A magnetic field line represents the direction that a free north pole would follow in a magnetic field.
Features: - Lines show the shape of the magnetic field - Lines indicate direction (from north to south pole) - Lines closer together where the field is stronger - Lines never cross