GCSE Physics – Fuses and circuit breakers
Learning Objectives
-I can describe the functions of fuses, miniature circuit breakers (MCB) and residual current circuit breakers (RCCB) including calculations of appropriate fuse rating
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Question 1 of 25
1. Question
What is a fuse?
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Question 2 of 25
2. Question
Where are fuses?
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Question 3 of 25
3. Question
What does a fuse contain?
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Question 4 of 25
4. Question
When is a fuse active?
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Question 5 of 25
5. Question
What happens to the wire in a fuse when there is too high a current?
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Question 6 of 25
6. Question
What happens to the wire in a fuse when there is too low a current?
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Question 7 of 25
7. Question
What happens when the wire in a fuse heats up?
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Question 8 of 25
8. Question
What happens when the wire in a fuse heats up?
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Question 9 of 25
9. Question
What equation is used to calculate the value of the fuse required?
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Question 10 of 25
10. Question
What is the symbol equation that is used to calculate the value of the fuse required?
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Question 11 of 25
11. Question
Rearrange the power equation to make voltage the subject.
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Question 12 of 25
12. Question
Rearrange the power equation to make voltage the subject.
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Question 13 of 25
13. Question
Rearrange the power equation to make current the subject.
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Question 14 of 25
14. Question
Rearrange the power equation to make current the subject.
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Question 15 of 25
15. Question
What does P stand for in the equation for power?
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Question 16 of 25
16. Question
What does V stand for in the equation for power?
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Question 17 of 25
17. Question
What does I stand for in the equation for power?
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Question 18 of 25
18. Question
What is a circuit breaker?
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Question 19 of 25
19. Question
How many types of circuit breakers are there?
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Question 20 of 25
20. Question
What does MCB stand for?
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Question 21 of 25
21. Question
What does RCCB stand for?
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Question 22 of 25
22. Question
What is a miniature circuit breaker?
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Question 23 of 25
23. Question
Compare a miniature circuit breaker with a fuse.
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Question 24 of 25
24. Question
What is a residual current circuit breaker?
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Question 25 of 25
25. Question
Compare a residual current circuit breaker with a miniature circuit breaker.
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