Electric Currents

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Across
  1. 2. SI unit of measure
  2. 4. produces direct currents
  3. 5. end of circuit in battery
  4. 8. currents periodically reverse direction
  5. 9. simplest semiconductor device
  6. 11. resistor with lower resistance when heated
  7. 13. SI unit for measuring resistance
  8. 16. collisions between atoms and electrons in a wire
  9. 17. acts as switch to control current flow in a circuit
  10. 19. has rounded third prong
  11. 20. current always flows in the same direction
Down
  1. 1. amount of charge that flows in a given period of time
  2. 3. subatomic particle with negative charge
  3. 6. SI unit of measure
  4. 7. device used to provide resistance
  5. 10. has one prong on the plug that is wider than the other
  6. 12. force experienced by subatomic particles in electric field
  7. 14. contains elaborate circuits
  8. 15. charge flowing through closed path and returning to start
  9. 18. electric potential difference that produces current