Electricity & Magnetism Vocabulary Review

5. a device that can increase or decrease the voltage flowing in a circuit
6. made of soft metals that are easy to magnetize
7. a type of circuit where there is more than one path for the electrons
8. a closed path through which electrical current can flow
14. any object that needs electricity to work
17. a device that prevents a circuit from being overloaded; uses an electromagnet
18. a type of circuit where current cannot flow
19. magnets that can maintain their magnetic properties for a long time
20. a subatomic particle with a negative charge
21. converts electrical energy into mechanical energy
24. how current is measured in a circuit
26. coils of wire wrapped around an iron core. part of an electromagnet
27. current produced by a generator. Capable of switching directions 60x per second
29. used to open and close a circuit
31. a magnet that is created when an electric current is passed through a wire
32. the force between two charged particles or two magnetic poles
33. metal wires such as copper & aluminum are examples of this

1. a device that converts mechanical energy into electrical energy
2. type of circuit that provides one path for the electrons
3. the area that surrounds a magnet
4. created by the flow of electrons along a path
8. the type of energy found inside a battery
9. the unit for measuring resistance
10. current produced by a battery
11. anything that slows down the flow of current in a circuit
12. moving a magnet through a coil of wire produces an electric current
13. must be aligned in order for a substance to be magnetic
15. rubber, wood, plastic and air are examples of this
16. created by the build up of electrons on the surface of an object
22. V= IR
23. any material that can become magnetic(ie: iron,nickel,cobalt)
25. the force that pushes current along a circuit. Sometimes called potential difference
28. the strongest parts of the magnet; north and south
30. the flow of electric charge through a circuit