IGCSE · 4 · multiple choice
Electricity and magnetism · Question 1
Electricity and magnetism · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- recall
- Marks
- 1
- Topics
- 1
- Answer
- Complete
Which statement about a permanent magnet and a piece of unmagnetised iron is correct?
- A
The magnet attracts the iron, and the iron attracts the magnet.
- B
The magnet attracts the iron, but the iron has no effect on the magnet.
- C
The magnet repels the iron if the south pole is brought close.
- D
The iron must first be magnetised before any force acts.
Ready to self-mark?Reveal the detailed answer guide
Answer and reasoning
Predict from the governing principle before looking for a matching option. Then reject alternatives by checking direction, units, limiting behaviour or the physical meaning of each statement.
- 1
The correct choice is A: The magnet attracts the iron, and the iron attracts the magnet.
- 2
C is the item's real target: an unmagnetised magnetic material is always attracted, whichever pole approaches. Repulsion is the only sure test for a magnet.
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