| A | B |
|---|
| will not conduct electricity | insulator |
| a good conductor of electricity | metal |
| used to measure current | ammeter |
| rubbing an insulator will charge it with | static electricity |
| two negatively charged insulators will | repel one another |
| one broken bulb...all bulbs off | series circuit |
| one broken bulb...others may stay on | parallel circuit |
| these flow around a circuit | electrons |
| in a series circuit the ammeter has | same reading in any position |
| the force around a magnet | magnetic field |
| Two unlike poles of magnets | attract |
| Permanent magnets can be | made of iron, but not copper |
| increase :the number of coils/current | to make an electromagnet stronger |
| electric bell, relay switch, speakers | uses of electromagnets |
| used to make a circuit complete/incomplete | switch |
| Adding an extra bulbs to series circuit | causes bulbs to become dimmer |
| Adding an extra cell(battery) to series circuit | causes bulbs to become brighter |
| rubbing electons off an insulator e.g perspex | makes insulator positively charged |
| plastic | does not stop a magnetic field |
| all electrical circuits | have magnetic field & give off heat |
