Electricty

3. The rate at which something repeats.
5. A component that opposes changes in electrical current.
7. The region of electric attraction or repulsion around a constant voltage.
8. The unit of measure for voltage.
12. The unit of measure for electric current.
13. A current that is constantly changing.
17. A measure of how strong an electric charge across a material is.
19. When wires from different parts of a circuit (or different circuits) connect accidently,
20. A flow of electrons between atoms due to an electrical charge across a material.
22. A device which uses a chemical reaction to create an electric charge across a material.
23. A sub-atomic particle that has a negative electrical charge.
25. The unit of measure for resistance.
26. A material that has low electrical resistance.
28. A current that is constant and not changing.
29. An electric device that uses a small amount of current to control a large amount of current.

1. A device that converts sound waves into electrical energy.
2. Has a turn-on energy so high that light is generated when current flows through it.
4. Strength or level of something.
6. An electric component that can store electrical pressure (voltage) for periods of time.
9. Shortened name for ampere.
10. When several electrical components are connected between the same points in a circuit.
11. A device which uses two coils to change the AC voltage and current.
12. Smallest particle of a chemical element, made up of protons, neutrons and electrons.
14. The electrical friction between an electric current and the material it flowing through.
15. Components used to control the flow of electricity in a circuit. They are made of carbon.
16. A device to connect or disconnect wires in an electric circuit.
18. Inductors used for sending or receiving radio signals.
21. A device which uses steam or water pressure to move a magnet near a wire, creating an electric current in the wire.
24. A measure of how fast electrons are flowing in a wire.
27. A common name for the 0V or "-" side of the battery or generator.
30. When electrical components are connected one after the other.