Across
- 1. a device that converts chemical energy into electrical energy
- 6. a material that has almost zero resistance when it is cooled to low temperatures
- 7. a flow of electric charge in only one direction
- 9. potential difference
Down
- 2. a flow of electric charge that regularly reverses its direction
- 3. a material through which electric charge can flow easily
- 4. a material through which charge cannot flow easily
- 5. a continuous flow of electric charge
- 8. the opposition to the flow of electric charges in a material