GCSE Physics – National grid – Structure of a transformer
Learning Objectives
-I can describe the structure of a transformer
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Question 1 of 20
1. Question
What do transformers do?
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Question 2 of 20
2. Question
What type of current do transformers work with?
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Question 3 of 20
3. Question
What does a basic transformer consist of?
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Question 4 of 20
4. Question
How are the primary and secondary coil connected?
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Question 5 of 20
5. Question
What are the coils of a transformer wound around?
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Question 6 of 20
6. Question
When a transformer is turned on, what happens in the first coil?
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Question 7 of 20
7. Question
What is produced around the primary coil?
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Question 8 of 20
8. Question
Why are iron cores used in transformers?
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Question 9 of 20
9. Question
What does the iron core do to the primary coil’s field?
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Question 10 of 20
10. Question
What type of magnetic field do the primary coil and core produce together?
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Question 11 of 20
11. Question
Why is the magnetic field around the primary coil always changing?
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Question 12 of 20
12. Question
What does the changing magnetic field do to the secondary coil?
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Question 13 of 20
13. Question
What does the induced potential difference in the secondary coil cause?
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Question 14 of 20
14. Question
What are the two types of transformer?
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Question 15 of 20
15. Question
What does a step-up transformer do?
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Question 16 of 20
16. Question
In a step-up transformer, which coil has more turns?
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Question 17 of 20
17. Question
What does a step-down transformer do?
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Question 18 of 20
18. Question
In a step-down transformer, which coil has more turns?
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Question 19 of 20
19. Question
What do we assume transformers do be?
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Question 20 of 20
20. Question
What is true of a 100% efficient transformer?
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