Electromagnetism written questions
Answer G3 Pure / O-Level questions on current-produced magnetic fields and the motor effect, with marking guidance for your reasoning.
Learning goals
- Interpret the field pattern around a straight current-carrying wire
- Draw the magnetic field pattern around a straight current-carrying wire
- Interpret the field pattern around a current-carrying solenoid
- Draw the magnetic field pattern around a current-carrying solenoid
- Relate current magnitude and direction to magnetic field
- Describe electromagnet applications
- Describe experiments showing the force on a current-carrying conductor in a magnetic field
- Describe magnetic force on a charged-particle beam
- Predict force reversal when current or field reverses
- Use Fleming’s left-hand rule
- Explain the turning effect on a current-carrying coil
- Explain how current and turns increase the turning effect
- Describe split-ring commutator action
- Describe the effect of winding a motor coil on a soft-iron cylinder
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Practise
Practise questions on the skills you are learning. This is for practice only and doesn’t count towards your course progress.
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Beyond the syllabus: optional enrichment that does not count towards your progress.