 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
| • HOME • ABOUT • CATEGORIES • COPYRIGHT • NEWSLETTER   
|
electromagnet
A magnet constructed from a soft iron core around which is wound a coil of insulated wire. A magnetic field is set up when an electric current is passed through the wire; it is reinforced and concentrated by the core because of its high permeability. The field disappears when the current is switched off.
Related category
• ELECTRICITY AND MAGNETISMAlso on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History