GCSE Physics – Electromagnets

Last updated: 13/05/2020
AQA GCSE Science – Combined science foundation Magnetism and electromagnets GCSE Physics – Electromagnets

Learning Objectives

-I can describe how to change the strength of an electromagnet
-I can explain how an electromagnet works

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  1. Current
  2. Review
  3. Answered

  1. What is a magnetic field?

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  2. What is a uniform magnetic field?

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  3. What are the main magnetic materials?

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  4. Why is steel magnetic?

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  5. What do we call a wire which electricity can flow through?

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  6. What happens when a current flows through a conducting wire?

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  7. What does the strength of the magnetic field around a wire depend on?

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  8. What else does the strength of the magnetic field around a wire depend on?

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  9. What is the right thumb rule?

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  10. What does the right hand rule say?

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  11. What can we make with just a wire?

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  12. What is a solenoid?

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  13. What happens when current flows in a solenoid?

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  14. What does an iron core do to a solenoid?

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  15. What is the magnetic field inside a solenoid like?

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  16. What do the small magnetic fields caused by each coil in a solenoid do?

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  17. How could you increase the magnetic field strength of a solenoid?

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  18. How else could you increase the magnetic field strength of a solenoid?

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  19. What is an electromagnet?

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  20. Why are electromagnets used in magnetic separators?

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  21. Why are electromagnets used in cranes?

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  22. What can electromagnets be used in?

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  23. What else are electromagnets used for?

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  24. How can an electromagnet be turned on?

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  25. How can an electromagnet be turned off?

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