E & M

3. The two ends of a piece of magnetic material where the magnetic forces are strongest, labeled north pole and south pole.
8. When like poles or charges are too close to each other they do this
9. When opposite charges or poles are too close to each other they do this
11. A device that uses electromagnetic induction to induce electrical current by rotating loops of wire through a magnetic field.
12. a type of fan that is moved by steam in a power plant to generate electricity
15. difference in electric potential between two points.
17. a force produced when magnetic poles interact.
18. Strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the coil.
19. An area surrounding an electron that exerts a force on anything nearby with an electric charge; strongest nearest the electron and weakens with distance.
20. A material that allows electrons to move easily through it.
22. The opposition to the flow of electrons through a conductor; measured in ohms.
23. A property of some materials in which there is a force of repulsion or attraction between certain like and unlike poles.
25. A device that uses a permanent magnet to attract the earths natural magnetic field in order to navigate an area
26. A material that does not allow heat or electrons to move through it easily.

1. the ability to create a current using a magnetic field while still being electrically isolated from the circit
2. a coil of wire with a current that acts a bar magnet.
4. A device that contains a rotating electromagnet that changes electrical energy to mechanical energy.
5. An electrical circuit where the current flows through more than one path. If one path is interrupted, current will still flow through the other paths.
6. The continuous flow of electric charges through a material
7. a metal often used in electric circuits because its a great conductor of electricity
10. a piece of metal that can make an electromagnet stronger when its placed inside the coil
13. The region around a magnet where magnetic forces act.
14. An electrical circuit where the current has only one path. If the path is interrupted in any point, it stops current flow in the entire circuit.
16. a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons
21. A device that can increase or decrease the voltage of an alternating current.
24. the relationship between electricity and magnetism.