| A | B |
|---|
| Flemings LH rule : Thumb = | Force, direction motor turns |
| Flemings LH rule : Ist finger = | magnetic field direction N to S |
| Flemings LH rule; 2nd finger = | Direction of current + to - |
| Increases electromagnetic strength | more turns,higher current. |
| Invented electric motor | Michael Faraday |
| Unlike magnetic poles | Attract |
| (a)Like magnetic poles | Repel |
| Weaken permanent magnet | Dropping, heating, A.C current |
| Earth's magnetic field | Causes compass needle to point N |
| Cobalt, Nickel, Iron | Magnetic metals |
| Iron filings | Used to reveal magnetic field |
| Advantage of electromagnet | can be turned on/off |
