Electricity in the Home 2

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Across
  1. 3. this ugly structure is used to support high voltage cables in the National Grid
  2. 5. the electrical quantity that is always conserved (ie the total is the same)
  3. 7. one coulomb of charge moving past a given point in a second is one _________
  4. 9. the unit of potential difference
  5. 10. used to change voltages up and down
  6. 11. the unit of power - one joule per second
  7. 13. the rate of flow of electrical charge
Down
  1. 1. brown wire?
  2. 2. if i take one coulomb and increase its potential difference by one volt in takes one _______ of energy to do so
  3. 4. two or more cells in series
  4. 6. blue wire?
  5. 8. the case of an appliance with a two core wire is probably made from this
  6. 12. green and yellow wire?