BoB's crossword, the most useful crossword of all time !!

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Across
  1. 1. has more turns on the secondary coil and so it increases voltage
  2. 9. where current splits or join in a circuit
  3. 11. the high-pressure steam is forced through a turbine making it turn
  4. 13. a path for electrical charge to pass through
  5. 14. things that uses electromagnets in a door bell
  6. 15. instrument to measure the flow of electricity
  7. 16. an electric current that always flows in one direction
  8. 17. electricity is transported across the country by vast networks of pylons
  9. 18. when electricity is passed through a coil of wire, the coil has a magnetic field around it
  10. 19. the region around a magnet where it has a magnetic effect
  11. 20. stored energy
  12. 21. unit of energy
Down
  1. 2. fossil fuels are burnt to heat and water
  2. 3. an electric current that is constantly changing direction
  3. 4. a safety device that protects an electric cable from overheating so that the insulation doesn't catch fire
  4. 5. when energy spreads out into the surroundings
  5. 6. the rate at which an electrical appliance uses electrical energy
  6. 7. has fewer turns on the secondary coil and so decreases voltage
  7. 8. can be used to change the voltage of AC
  8. 10. joules per second
  9. 11. the turbine is attached to a generator which turns to generate electricity
  10. 12. how good a device is at changing energy from one form to another