Across
- 3. any material that conducts electricity
- 6. measures the strength of an electric current
- 8. 1,000 watts
- 9. the movement of electrons from one atom to another along a conductor
- 12. a material that does not transmit electricity
- 14. an apparatus that changes alternating current to direct current
- 15. rapid and interrupted current
- 16. number of times that alternating current changes direction in a second
Down
- 1. measures how much electric energy is being used in one second
- 2. changes direct current to alternating current
- 4. measures the resistance of an electric current
- 5. the flow of electricity along a conductor
- 7. prevents excessive current from passing through a circuit
- 10. good conductor
- 11. unit that measures the pressure or force of a current
- 13. constant, even-flowing current that travels in one direction only