GCSE Physics – Transformers

Last updated: 14/05/2020
CCEA GCSE Science – Physics higher Magnetism and electromagnetism GCSE Physics – Transformers

Learning Objectives

-I can describe the structure of a transformer
-I can use, rearrange and can recall the units needed for Vp_p / Vs_s = np_p / ns_s
-I can use, rearrange and recall the units needed for Vs_s Is_s = Vp_p Ip_p

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  1. Current
  2. Review
  3. Answered

  1. What is the normal equation for power?

    • 1.
    • 2.
    • 3.
    • 4.

  2. What are the units for power?

    • 1.
    • 2.
    • 3.
    • 4.

  3. What are the units for voltage?

    • 1.
    • 2.
    • 3.
    • 4.

  4. What do transformers do?

    • 1.
    • 2.
    • 3.
    • 4.

  5. What type of current do transformers work with?

    • 1.
    • 2.
    • 3.
    • 4.

  6. What does a basic transformer consist of?

    • 1.
    • 2.
    • 3.
    • 4.

  7. How are the primary and secondary coil connected?

    • 1.
    • 2.
    • 3.
    • 4.

  8. What type of magnetic field do the primary coil and core produce together?

    • 1.
    • 2.
    • 3.
    • 4.

  9. Why is the magnetic field around the primary coil always changing?

    • 1.
    • 2.
    • 3.
    • 4.

  10. What does the changing magnetic field do to the secondary coil?

    • 1.
    • 2.
    • 3.
    • 4.

  11. What does the induced potential difference in the secondary coil cause?

    • 1.
    • 2.
    • 3.
    • 4.

  12. What are the coils of a transformer wound around?

    • 1.
    • 2.
    • 3.
    • 4.

  13. Why are iron cores used in transformers?

    • 1.
    • 2.
    • 3.
    • 4.

  14. What does the iron core do to the primary coil’s field?

    • 1.
    • 2.
    • 3.
    • 4.

  15. When a transformer is turned on, what happens in the first coil?

    • 1.
    • 2.
    • 3.
    • 4.

  16. The ratio of potential differences on transformer coils matches what?

    • 1.
    • 2.
    • 3.
    • 4.

  17. What are the two types of transformer?

    • 1.
    • 2.
    • 3.
    • 4.

  18. What does a step-up transformer do?

    • 1.
    • 2.
    • 3.
    • 4.

  19. In a step-up transformer, which coil has more turns?

    • 1.
    • 2.
    • 3.
    • 4.

  20. What does a step-down transformer do?

    • 1.
    • 2.
    • 3.
    • 4.

  21. In a step-down transformer, which coil has more turns?

    • 1.
    • 2.
    • 3.
    • 4.

  22. What is produced around the primary coil?

    • 1.
    • 2.
    • 3.
    • 4.

  23. What is the potential difference vs turns equation?

    • 1.
    • 2.
    • 3.
    • 4.

  24. What is Vp_p in the voltage vs turns equation?

    • 1.
    • 2.
    • 3.
    • 4.

  25. What is ns_s in the voltage vs turns equation?

    • 1.
    • 2.
    • 3.
    • 4.