Electricity

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Across
  1. 2. this type of material tends to make a good conductor
  2. 3. the material most electrical wiring is made of
  3. 4. the unit of voltage (singular)
  4. 10. its symbol is the letter R
  5. 11. weather phenomenon caused by electric charges
  6. 12. its symbol is the letter I
  7. 13. the unit of current (singular)
  8. 15. a type of circuit with only one path
  9. 17. a material that allows electricity to flow through
  10. 19. its symbol is a series of long lines/short lines
  11. 20. a type of circuit with more than one path
Down
  1. 1. opposite charges do this
  2. 5. its symbol is a zigzag line with a circle around it
  3. 6. a material with no resistance
  4. 7. like charges do this
  5. 8. a circuit component that can be open or closed (off or on)
  6. 9. the static generator we used to demonstrate electricity
  7. 14. a material that does not allow electricity to flow through easily
  8. 16. its symbol is the letter V
  9. 18. the unit of resistance (singular)