Magnetism and Electromagnetism
4 marks · EasyLook at the diagram showing two bar magnets facing each other with their north pole of one near the south pole of the other.
What will happen between the two magnets in this arrangement? Explain your answer.
Describe one property that all magnetic field lines show.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a) The magnets attract each other because unlike (opposite) poles attract.
(b) Magnetic field lines show the direction of the magnetic force—from north to south outside the magnet; also, they never cross each other.
Common mistakes: Confusing poles that attract/repel; Stating field lines go 'in all directions'
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · Correct statement that magnets attract.
M1 (a) · 1 mark · Explains attraction is because opposite poles attract.
B2 (b) · 2 marks · States any main property of field lines: direction (north to south outside), never cross, density indicates strength, etc. (1 mark for each valid point, max 2).
Worked solution
a) The two magnets attract each other as the north pole of one is near the south pole of the other. Opposite poles attract.
b) Magnetic field lines show the direction of force (from north to south outside the magnet) and never cross each other.