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:
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
The four types of electromagnets include solenoid electromagnets, flat-faced electromagnets, cylindrical electromagnets, and horseshoe electromagnets. Each type has unique features and applications depending on their design and magnetic field strength.
Electromagnets
Electromagnets do not affect glue.
Yes, food processors do have electromagnets.
All electromagnets are magnetic when they are turned on.
Yes, a computer does have electromagnets in it. Electromagnets are used in various components of a computer, such as the hard drive, speakers, and fans. These electromagnets are essential for functions like data storage, audio output, and cooling system operation within the computer.
The electromagnets that are used in junkyards are called just that, electromagnets. They are used to sort out different types of metals.
Electromagnets on the track repel electromagnets on the bottom of the train.
no there is no use of electromagnets in iron box
CAT Scan does not use electromagnets, its MRI (Magnetic Resonance Imaging) which uses Electromagnets to produce images of the patient's body.
D. J. Kroon has written: 'Electromagnets' -- subject(s): Electromagnets 'Laboratory magnets' -- subject(s): Electromagnets