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