Isaiah's Electricity puzzle

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Across
  1. 3. a path for a current
  2. 6. circut, when there is no current
  3. 11. smallest negative particle
  4. 12. current, periodically reverses direction
  5. 13. when a material doesn't allow easy transfer
  6. 15. circut, has no resistance
  7. 16. unit to measure potential difference
  8. 17. possibility of doing work
Down
  1. 1. current, flows in one direction
  2. 2. Material that isn't good or bad at conducting electricity
  3. 4. when electron and protons are equal
  4. 5. Opposition to the flow of current
  5. 7. smallest positive particle
  6. 8. when a electron can move easily between material
  7. 9. valance, number of electrons in a incomplete outer shell that it can take or lose
  8. 10. electron, when electrons escape the outermost ring and become able to be transferred
  9. 14. number, number of protons in the nucleus balanced by a equal amount of orbiting electrons