Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Magnetism and Electromagnetism
293 practice questions
Topics covered
Practice questions
131–140 of 293
Question 131
2 marks · Easy
Answer and see the solution →Give two examples of materials that can become magnetised by induction.
Question 132
1 mark · Easy
Answer and check →Which of the following will become magnetised if placed inside a magnetic field?
- A.Plastic ruler
- B.Iron rod
- C.Glass bottle
- D.Aluminium foil
Question 133
2 marks · Easy
Answer and see the solution →Explain why an iron nail loses its magnetism when a permanent magnet is removed from it.
Question 134
2 marks · Easy
Answer and see the solution →A steel needle and an iron nail are both placed in a magnetic field. After removing the field, what will happen to their magnetism? Explain your answer.
Question 135
3 marks · Easy
Answer and see the solution →The picture below shows three iron paperclips hanging from the end of a bar magnet.
(a)[2 marks]Explain why the paperclips are able to stick to each other.
(b)[1 mark]Suggest what will happen if the magnet is taken away from the top of the row of paperclips.
Question 136
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 137
2 marks · Easy
Answer and see the solution →Explain why induced magnetism in iron is useful for electromagnets.
Question 138
3 marks · Normal
Answer and see the solution →An iron nail is placed near the north pole of a bar magnet.
(a)[1 mark]State what happens to the iron nail when it is placed near the north pole of the bar magnet.
(b)[2 marks]Explain why the end of the nail nearest the magnet becomes magnetised, and state its polarity.
Question 139
4 marks · Normal
Answer and see the solution →A student holds a steel nail and an iron nail next to a bar magnet for several minutes. The magnet is then removed.
(a)[2 marks]Describe what happens to the magnetism in each nail after the magnet is taken away.
(b)[2 marks]Explain the difference in the behaviour of the iron and steel nails.
Question 140
2 marks · Normal
Answer and see the solution →A company wishes to make temporary electromagnets for use in a factory. They can choose between using iron and steel for the core.
Which material should they choose for the core, and why?