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Magnets and magnetic fields

Magnets and magnetic fields

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Question 5

An industrial design engineer is developing a magnetic sorting system to separate ferrous contaminants from grain. The engineer constructs four prototype electromagnets, each consisting of a solenoid wound around a central core. Each prototype carries an identical constant electrical current:

  • Prototype A: 120120120 turns, wooden core
  • Prototype B: 120120120 turns, soft iron core
  • Prototype C: 450450450 turns, wooden core
  • Prototype D: 450450450 turns, soft iron core

Identify which prototype will produce the strongest magnetic field, and justify your answer by considering both the number of turns and the material of the core.

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Markscheme

Magnets and magnetic fields Questions

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

17 exam-style questions on OCR GCSE Physics Magnets and magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.

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