Electricity Crossword Puzzle

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Across
  1. 4. Result of object interaction
  2. 5. Unit of Force
  3. 7. To lose or release
  4. 13. Non-moving charge
  5. 16. Force between static charges
  6. 17. Blocks flow of electrical current
  7. 19. Allows electric current to flow
Down
  1. 1. Object connected to Earth
  2. 2. Table of electron attracted materials
  3. 3. Charging of object from afar
  4. 6. Unlike charges _
  5. 8. Study of static electric charge
  6. 9. Object without any charge
  7. 10. Charging of object by touch
  8. 11. To move or rub against
  9. 12. Like charges _
  10. 14. Charge outside of nucleus
  11. 15. Unit of electric charge
  12. 18. Center of atom