Permanent & Induced Magnetism, Magnetic Forces & Fields (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Permanent magnets
Permanent magnets
Magnets that always create their own magnetic field
Can permanent magnets be switched on/off?
Can permanent magnets be switched on/off?
No, cannot be turned on and off
Examples of permanent magnets
Examples of permanent magnets
Bar magnets, horseshoe magnets
Induced magnets (definition)
Induced magnets (definition)
Magnets that become magnetised when placed in a magnetic field
Another name for induced magnets
Another name for induced magnets
Temporary magnets
Can induced magnets repel other magnets?
Can induced magnets repel other magnets?
No, they can only be attracted to other magnets
Induced magnets when magnetic field removed
Induced magnets when magnetic field removed
They lose most or all of their magnetism
How to make temporary magnets
How to make temporary magnets
By stroking them with a permanent magnet
Force between permanent & induced magnets
Force between permanent & induced magnets
Always an attraction
Examples of induced magnet materials
Examples of induced magnet materials
Iron, Nickel, Cobalt
Do induced magnets have fixed poles?
Do induced magnets have fixed poles?
No, do not have fixed poles
Example of induced magnets in action
Example of induced magnets in action
Iron filings near bar magnets