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12.1 Magnets and magnetic fields

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Question 14

An industrial robotic arm slowly lowers a powerful permanent magnet vertically towards a small iron bolt resting on a horizontal conveyor belt.

Explain why the bolt remains stationary on the belt at first, but then suddenly jumps upwards to meet the magnet only when the magnet is lowered to a certain critical height.

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Markscheme

12.1 Magnets and magnetic fields Questions

  1. GCSE
  2. /Physics
  3. /12.1 Magnets and magnetic fields

30 exam-style questions on Edexcel GCSE Physics 12.1 Magnets and magnetic fields, covering 12.1.1 Magnetic poles, 12.1.2 Magnetic materials; permanent and induced magnets, 12.1.3 Magnetic fields, and 12.1.4 Plotting compasses and the Earth's magnetic field. Each one has a worked solution and a mark scheme showing where the marks go.

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