| A | B |
|---|
| magnet | an object that attracts certain other materials, particularly iron and steel |
| magnetism | force exerted by magnet |
| magnetic poles | parts of a magnet were the magnetic force is strongest |
| magnetic field | region around a magnet where the force is exerted |
| electromagnetism | magnetism that results from an electric current |
| electromagnet | made by placing a piece of iron or steel inside a coil of wires,ending a current through wire |
| generator | device that converts motion or kinetic energy into electrical energy |
| direct current | current that only flows in one direction |
| alternating current | current that moves forward then reverses direction at regular intervals |
| transformer | a device that increases or decreases voltage |
| watt | unit of measurement of electric power |
| kilowat | 1000 watts |
