Long answer·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
Compare diamagnetic, paramagnetic, and ferromagnetic substances in terms of response to an external magnetic field, susceptibility, and temperature effect.
Total: 8 marks
(a) Compare their response to an external field. (3 marks)
(b) Compare the sign and relative size of susceptibility. (3 marks)
(c) State the effect of temperature on ferromagnetic behaviour. (2 marks)
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