GCSE Physics – Plugs
Learning Objectives
-I can describe the differences between a.c and d.c. current
-I can describe the wiring inside a three-pin lug
-I can describe that appliances with metal casings are usually earthed
-I can describe the process of double insulation
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Question 1 of 28
1. Question
What type of supply is mains electricity?
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Question 2 of 28
2. Question
What is the voltage of the domestic supply in the UK?
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Question 3 of 28
3. Question
What is the frequency of the domestic supply in the UK?
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Question 4 of 28
4. Question
What is direct current?
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Question 5 of 28
5. Question
What is alternating current?
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Question 6 of 28
6. Question
How many cores are in most electrical appliance cables?
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Question 7 of 28
7. Question
Why is the fuse in the circuit?
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Question 8 of 28
8. Question
What does the fuse do?
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Question 9 of 28
9. Question
How are the wires in a cable identified?
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Question 10 of 28
10. Question
Which wire is blue?
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Question 11 of 28
11. Question
Which wire is brown?
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Question 12 of 28
12. Question
Which wire is green and yellow in a plug?
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Question 13 of 28
13. Question
What colour is the neutral wire in a plug?
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Question 14 of 28
14. Question
What colour is the live wire in a plug?
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Question 15 of 28
15. Question
What colour is the earth wire?
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Question 16 of 28
16. Question
What does the neutral wire do?
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Question 17 of 28
17. Question
What does the earth wire do?
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Question 18 of 28
18. Question
What does the live wire do?
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Question 19 of 28
19. Question
What voltage is the neutral wire at?
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Question 20 of 28
20. Question
What voltage is the earth wire at?
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Question 21 of 28
21. Question
What voltage is the live wire at?
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Question 22 of 28
22. Question
Why is the earth pin the longest?
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Question 23 of 28
23. Question
What happens if the live wire and earth wire touch?
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Question 24 of 28
24. Question
Why is a live wire dangerous even when the circuit is broken?
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Question 25 of 28
25. Question
What is double insulation?
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Question 26 of 28
26. Question
What type of appliances have double insulation?
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Question 27 of 28
27. Question
What is double insulation made from?
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Question 28 of 28
28. Question
Why is there a case made of plastic?
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