| A | B |
|---|
| charge | a measure of the extra positive or negative particles that an object has |
| static electricity | an electric charge that stays on an object |
| electric field | the space around an object in which electric forces occur |
| electric current | a flow of electric charges |
| circuit | a path that is made for electric current |
| electric cell | a device that supplies energy to move charges through a circuit |
| conductor | a material that electric current can pass through easily |
| insulator | a material that current cannot pass through easily |
| resistor | a material that resists the flow of electric current but doesn't stop it |
| series circuit | a circuit that has only one path for electric current |
| parallel circuit | a circuit that has more than one path for the electric current |
| magnet | an object that attracts certain materials, such as iron or steel |
| magnetic pole | the end of a magnet |
| magnetic field | the space all around a magnet where the force of the magnet can act |
| electromagnet | an arrangement of wire wrapped around a core, producing a temporary magnet |
| objects with a positive electric charge have... | more positive particles than negative |
| objects with like charges | repel each other |
| objects with opposite charges | attract each other |
| magnets are attracted to each other at... | the poles |
| electromagnets in motors cause... | motion |
