Revise GCSE Physics

    P2d Fuels for power

  1. What is a fuel?
  2. What fuels are used in power stations?
  3. What are the potential advantages and disadvantages of different fuel energy sources?
  4. How do different energy sources compare in terms of such factors as availability, risks and environmental impact?
  5. What is Power?
  6. What are the units for power?
  7. What is a kiloWatthour?
  8. What is the symbol for kiloWatthours?
  9. What is measured in kilowatthours?
  10. How do you calculate the energy used by a device in kilowatt hours?
  11. What is electrical power?
  12. What is the difference between electrical power and ordinary power?
  13. How is electrical power calculated?
  14. How is the electrical power rating of an electrical appliance calculated?
  15. How is electricity charge on an electricity bill?
  16. How is the energy supplied by a device calculated?
  17. What is the difference between Peak and Off-Peak electricity?
  18. Why is off peak electricity produced?
  19. What are the advantages and disadvantages for consumers and producers of using off-peak electricity in the home?
  20. What is a transformer?
  21. How do transformers work?
  22. Which electrical parameters are changed by a transformer and which remain the same?
  23. What type of electricity must be used with transformers?
  24. Why are transformers used in the national grid?
  25. Why is high voltage electricity more efficient than high current electricity in the national grid?