Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter
Magnetism
72 practice questions
Topics covered
Practice questions
31–34 of 34 · Easy
Question 31
2 marks · Easy
Answer and see the solution →A bar magnet is brought close to the end of an iron rod.
(a)[1 mark]State what happens to the iron rod.
(b)[1 mark]Explain why this happens.
Question 32
2 marks · Easy
Answer and see the solution →Explain why induced magnetism in iron is useful for electromagnets.
Question 33
4 marks · Easy
Answer and see the solution →(a)Iron nails are placed near a bar magnet on a sheet of paper. The teacher sprinkles iron filings around the bar magnet and taps the paper gently. Describe what pattern would be formed by the iron filings, and what this shows about the magnetic field.
(i)[1 mark]State what happens to the iron nails near the magnet.
(ii)[1 mark]Explain why the iron filings make lines and the shape of these lines.
(b)[2 marks]The teacher removes the bar magnet and the iron filings are brushed away. At the same spot, the teacher places a steel nail instead of an iron nail. What difference would you expect in how long the nail remains magnetised after the magnet is removed? Explain your answer.
Question 34
4 marks · Easy
Answer and see the solution →(a)[2 marks]List two materials that magnets can attract and two materials they cannot attract.
(b)[2 marks]Explain, using the idea of magnetic materials, why magnets attract some objects but not others. Give an example of a practical use of this property.