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Across 4. Electrical theory that states that electricity flows from negative to positive 6. Uses the magnetic field around a live conductor to act as a switching device 9. Electromotive Force 10. An element with no neutrons 14. The unit used to measure resistance to flow 16. Invisible to the naked eye 17. An example of a good conductor 18. Are positively charged

Down 1. Electrical pressure supplied from a battery or alternator 2. Have no charge 3. Electrical theory that states that electricity flows from positive to negative 4. Orbit the nucleus of an atom 5. Normally acts like an insulator, but can conduct under certain conditions 7. Building block of the universe 8. Like charges ______________ each other 11. The unit used to measure electron flow 12. An electron that is orbiting the furtherest away from its nucleus 13. The unit used to measure potential difference 15. Electrical force is required to get this