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An engineering team is developing an electromagnetic switching system. The design requires two distinct components:

  1. A solenoid core that magnetises easily when a current is applied and demagnetises rapidly when the current is switched off, to minimise energy loss.
  2. A latching pin that must retain a strong, permanent magnetic field to hold a lever in place after the energising current has ceased.

Which combination of materials is most suitable for these two components?

Component 1: Steel; Component 2: Iron

Component 1: Iron; Component 2: Steel

Component 1: Iron; Component 2: Aluminium

Component 1: Copper; Component 2: Steel

Magnets and magnetic fields Questions

Practise Edexcel GCSE Physics Magnets and magnetic fields with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Magnets and magnetic fields Questions

  1. GCSE
  2. /Physics
  3. /Magnets and magnetic fields