GCSE Physics – Mains electricity

Last updated: 06/05/2020
Edexcel International GCSE Science – Separate physics Electricity GCSE Physics – Mains electricity

Learning Objectives

-I can recall the voltage and frequency of mains electricity in the UK
-I can explain the difference between direct current and alternating current
-I can describe the inside of a plug
-I can describe the safety features of a plug

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  1. Current
  2. Review
  3. Answered

  1. What type of supply is mains electricity?

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  2. What is the voltage of the domestic supply in the UK?

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  3. What is the frequency of the domestic supply in the UK?

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  4. What is direct current?

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  5. What is alternating current?

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  6. How many cores are in most electrical appliance cables?

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  7. Why is the fuse in the circuit?

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  8. What does the fuse do?

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  9. How are the wires in a cable identified?

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  10. Which wire is blue?

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  11. Which wire is brown?

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  12. Which wire is green and yellow in a plug?

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  13. What colour is the neutral wire in a plug?

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  14. What colour is the live wire in a plug?

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  15. What colour is the earth wire?

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  16. What does the neutral wire do?

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  17. What does the earth wire do?

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  18. What does the live wire do?

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  19. What voltage is the neutral wire at?

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  20. What voltage is the earth wire at?

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  21. What voltage is the live wire at?

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  22. Why is the earth pin the longest?

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  23. What happens if the live wire and earth wire touch?

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  24. Why is a live wire dangerous even when the circuit is broken?

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  25. Why is there a case made of plastic?

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