Electricity and Magnetism

2. the difference in electrical charge between two points in a circuit expressed in volts.
3. A device that contains a rotating electromagnet that changes electrical energy to mechanical energy.
4. helps convert electric energy into mechanical energy. Uses a force to do so
5. Forms branches of which is a separate path for flow of electrons. One device breaking doesn’t affect entire circuit.
8. Rotating wire moves through a magnetic field, producing current in the wire
11. Basically the force behind each charge pushing it
12. The force of attraction or repulsion of a magnetic material due to the arrangement of its atoms, particularly electrons.
15. The attraction or repulsion between magnetic poles
16. A material that allows electrons to move easily through it.
18. When electric charges move. Basically the # of electrons that pass a certain point every second.
19. A looped or coiled wire carrying a current
20. The area near 2 magnets being either repelled or attracted. The magnetic field shows you whether or not the objects are being attracted.
21. Each end of the magnet
23. Has but a simple pathway through a series circuit. If one device fails, whole thing fails.

1. produce currents in a wire. Wire rotates to produce current
6. Ferromagnet in middle of coil
7. Used to increase or decrease voltage
9. Charged particles create this..
10. A characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons
13. Any material that attracts iron or other materials that contain iron
14. Greatly increases strength of magnetic field produced by solenoid
17. The opposition to the flow of electrons through a conductor; measured in ohms.
22. A material that does not allow heat or electrons to move through it easily.