Electricity Crossword

3. a material that has almost zero resistance when it is cooled to low temperatures
4. the transfer of excess charge through a conductor to Earth
5. the relationship of voltage current and resistance
7. a field produced by electric charges
10. a property that causes subatomic particles such as protons and electrons to attract or repel one another
14. a material through which electric charge can flow easily
16. an electric circuit with two or more paths through which charge can flow
19. a flow of electric charge that regularly reverses its direction
20. a flow of electric charge in only one direction

1. a material through which cannot flow easily
2. a device that prevents overheating due to current overload in a circuit
6. an electric circuit with only one path through which charge can flow
8. law stating that electric charge is never created or destroyed
9. the attraction or repulsion between electrically charged objects
11. the opposition to the flow of of electric charges in a material
12. potential difference in electrical energy
13. a device that converts chemical energy into electrical energy
15. the study of the behavior of electric charges including how charge is transferred between objects
17. a continuous flow of electric charge
18. the transfer of charge without contact between materials