Across
- 4. flow of electrons through a conductor
- 5. wire that melts and breaks a circuit if too much current is flowing
- 9. positive or negative pole of an electrochemical cell
- 10. path that an electric current follows
- 12. current in which electrons change direction at a regular rate
- 13. materials that allow electric charges to flow freely
- 15. current in a wire is equal to the voltage divided by the resistance
- 16. opposition to the flow of electric current
- 20. force that makes electrons move
- 21. atomic particle with a neutral charge
- 22. unit used to measure electromotive force
Down
- 1. switch that opens a circuit if too much current is flowing
- 2. current in which electrons always flow in the same direction
- 3. circuit in which electric current can follow more than one path
- 6. device that changes chemical energy into electrical energy
- 7. materials that prevent electric charges from flowing freely
- 8. atomic particle with a positive electric charge
- 10. form of energy caused by moving electrons
- 11. series of electrochemical cells connected together
- 14. circuit in which electric current follows only one path
- 15. unit used to measure resistance
- 17. unit used to measure electric current
- 18. substance that dissolves in water to form a conducting solution
- 19. atomic particle with a negative electric charge