Across
- 2. The unit in which electric current is expressed.
- 3. Charges change direction in this type of current.
- 4. This measures the strength & direction of current.
- 6. A signal that changes from on to off or 1 to 0.
- 11. The buildup of electric charge on an object.
- 15. Increase or decrease the voltage of AC.
- 16. A device that uses electricity to operate.
- 17. The flow of electric charges.
- 20. A signal that uses dashes and dots to create messages.
Down
- 1. A material that can be turned into a magnet.
- 5. Rapid electric discharge that occurs during storms.
- 7. A safety device that turns off the circut as needed.
- 8. A signal that changes continuously.
- 9. A digital code made up of the two digits 1 and 0.
- 10. A solenoid wrapped around an iron core.
- 12. Displays of light in the sky.
- 13. Any material that attracts objects made of iron.
- 14. A machine that scans the body to produce x-ray images.
- 18. A complete path through which charges flow.
- 19. Charges move in one direction in this type of current.