Electricity

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Across
  1. 2. the unit for resistance
  2. 3. measures the current in a circuit
  3. 4. a complete loop round which electricity flows
  4. 6. a material that does let electricity through
  5. 9. a material that does not let electricity through
  6. 11. a single looped circuit
  7. 13. two or more cells
  8. 14. turns the electricity on or off
  9. 16. the unit for current
  10. 18. how much energy is transferred through a component
  11. 19. a good material to insulate wires
  12. 21. the subatomic particle that moves round a circuit
Down
  1. 1. also called voltage
  2. 5. a good material to make wires from
  3. 7. the flow of electrons round a circuit
  4. 8. how hard it is for the electrons to move
  5. 10. the circuit has branches
  6. 12. measures voltage
  7. 15. lights up when current flows
  8. 17. the units for potential difference
  9. 20. a source of electricity