| A | B |
|---|
| opposite charges | attract |
| like charges | repel |
| positive charge | protons in nucleus |
| negative charge | electrons |
| circuit | closed loop that conducts electricity |
| induction | charged object near neutral object |
| series circuit | only one path for current |
| static electricity | extra charges on an object |
| parallel circuit | more than one path for current |
| insulator | prevents flow of electrons |
| conductor | permits flow of electrons |
| resistance | opposes flow of electrons |
| Ohm's law | current = voltage/resistance |
| watts | power units |
| voltage difference | pressure that moves charges |
| Law of conservation of charge | charges are not created or destroyed |
| battery | provides voltage difference |
| fuse | stops current when it melts |
| open circuit | broken circuit, does not work |
| lightning | enormous static discharge in nature |
| amps | unit for current |
| galvanometer | measures electric current with a magnet |
| electric motor | uses magnet and electrons to turn something |
| alternating current | electrons change direction |
| direct current | electrons go in one direction |
| current electricity | moving electrons |
| wire | metal carrying electrons |
| photo cell | light moves electrons |
