Physics - Magnets, Electromagnets and the Motor Effect
- Created by: evie-sd
- Created on: 26-02-17 15:04
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- PHYSICS REVISION
- MAGNETS
- Bar magnets are permanent magnets. This means that their magnetism is there all the time and cannot be turned on or off
- Bar Magnets have two poles
- North Seeking
- South Seeking
- Opposite (unlikes) poles attract
- The force ALWAYS moves north to south
- ELECTROMAGNETS
- How can we make an electromagnet stronger?
- Wrapping the coils around an iron core
- Adding more turns of wire
- Increase the current flowing through the coil
- a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
- How can we make an electromagnet stronger?
- The Motor Effect
- A current-carrying wire or coil can exert a force on a permanent magnet. This is called the motor effect.
- MAGNETS
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