| A | B |
|---|
| direct current | type of current produced by a battery |
| magetic poles | every magnet has two; place with strongest magnetic field on magnet |
| increased magnetic field | coomes from a stronger ferromagnetic material core |
| Like poles | repel each other |
| electromagnetism | relationship between electricity and magnetism |
| armature | spins continuously in an electric motor |
| compass | device with a magnetized needle that spins freely because Earth acts as a magnet |
| bar magnet | has magnetic field lines that spread out from pole and curve to the other |
| energy | abilty to move an object some distance |
| current | measured with a galvanometer |
| magnetic field | produced from an electric current |
| magnetic field lines | show the magnetic field around a magnet |
| alternating current | found in schools and houses |
| generating plant | has an alternating current transmitted at high voltage, but is used at low voltages |
| DC generator | contains a commutator instead of slip rings |
