Electricity

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Across
  1. 3. Electrical potential or potential difference
  2. 5. Flash produced by a discharge of atmospheric electricity
  3. 6. Elementary particle consisting of a charge of negative electricity
  4. 9. Elementary particle that carries a positive charge
  5. 10. Device for turning on or off an electrical current
Down
  1. 1. Electrical charge with more protons than electrons
  2. 2. The kind of electricity you create by rubbing a balloon on your head
  3. 4. Electrical charge with more electrons than protons
  4. 7. Complete path of an electric current including the source of electric energy
  5. 8. Uncharged elementary particle
  6. 11. Unit of electrical power, named after the Scottish inventor of the steam engine
  7. 12. Definite quantity of electricity