M and E

1. circuit - 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.
7. Strong temporary magnet made by inserting an iron core into a wire coil and passing an electric current through the coil
8. – the relationship between electricity and magnetism.
9. field An area surrounding an electron that exerts a force on anything nearby with an electric charge; strongest nearest the electron and weakens with distance
11. – a force produced when magnetic poles interact.
12. - The region around a magnet where magnetic forces act. magnetic field.
14. - A device that uses electromagnetic induction to induce electrical current by rotating loops of wire through a magnetic field.
16. - A material that does not allow heat or electrons to move through it easily.
17. A property of some materials in which there is a force of repulsion or attraction between certain like and unlike poles.

2. - The opposition to the flow of electrons through a conductor; measured in ohms.
3. motor - A device that contains a rotating electromagnet that changes electrical energy to mechanical energy.
4. A device that can increase or decrease the voltage of an alternating current.
5. - A difference in electrical potential, measured in volts with a voltmeter.
6. - The transfer of energy through matter in which energy moves from particle to particle.
8. a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons
10. circuit - 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.
13. - The two ends of a piece of magnetic material where the magnetic forces are strongest, labeled north pole and south pole.
15. charge – a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons
18. – a coil of wire with a current that acts a bar magnet.