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Not much, really... They are defined as devices that are made up of a steel or iron core that becomes magnetized by the electrical current that is in a coil which is wrapped around the core.
See the related Wikipedia link listed below for pictures and more information:
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∙ 10y ago
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What is the flow of electromagnets called?
Electromagnets
What things use electromagnets?
Well actually quite a few things use electromagnets such as a tv,remote control car, a phone (I don't know properly :s )and more
Do electromagnets affect glue?
Electromagnets do not affect glue.
How are electromagnets different from magnets?
You can turn electromagnets on and off.
How are electromagnets different from permanent magnet?
You can turn electromagnets on and off.
Do food processors have electromagnets?
Yes, food processors do have electromagnets.
Are all electromagnets magnetic?
All electromagnets are magnetic when they are turned on.
Where use electromagnets?
Inside of electric motors are electromagnets and permanent magnets. In a metal junk yard large electromagnets are used to pick up metal. In MRI's large electromagnets are used for imaging.
What are the electromagnets called that are used at junkyards?
The electromagnets that are used in junkyards are called just that, electromagnets. They are used to sort out different types of metals.
Does an iron box use electromagnets?
no there is no use of electromagnets in iron box
How do trains levitate?
Electromagnets on the track repel electromagnets on the bottom of the train.
How are electromagnets diffrent to either temporary or pemanent magents?
Electromagnets can be turned on and off.
