Chpater 2 - Basic Electrical Theory

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Across
  1. 4. Generally, the force that exists between two objects that contain opposite electrical charges.
  2. 5. A material, the smallest part of which would be an atom.
  3. 7. Any material composed of atoms.
  4. 10. Materials that conduct electricity easily.
  5. 13. Current that reverses its direction of flow at periodic intervals.
  6. 14. The center or core of an object.
  7. 18. Materials that hinder the flow of electricity.
  8. 19. Something that moves in only one direction.
  9. 20. A sub-atomic particle located in the nucleus of an atom; this has a positive charge.
  10. 21. The space in which an electron circles the nucleus of an atom.
Down
  1. 1. One of the principal parts of an atom. This has no charge and it is part of the nucleus.
  2. 2. The number of protons located in the nucleus of an atom.
  3. 3. A charge formed by an excess of electrons.
  4. 6. A device that can conduct current in either direction, or current that flows in two directions.
  5. 8. Electrons located in the outermost orbit or shell of an atom.
  6. 9. Current that flows in only one direction.
  7. 11. A sub-atomic particle that orbits the nucleus of an atom and contains a negative charge.
  8. 12. Generally, the force that exists between two objects that contain like electrical charges.
  9. 15. A combination of atoms that form the smallest part of an atom.
  10. 16. The smallest part of an element, this is composed of three primary sub-atomic particles; the proton, the neutron, and the electron.
  11. 17. A charge formed by a lack of electrons.