Respuesta :
Answer:
Electromagnets are temporary magnets made by supplying electric current to a soft iron wounded with coils of wire. Once the source of electricity is disconnected, the magnetism dies off.
However electromagnets usually have stronger electric fields than regular magnets, therefore they are often used in lifting large piece of equipment from one point to another, provided that the equipment are magnetic in nature.
Another major advantage of using an electromagnet rather than a regular magnet is that the magnetism of the electromagnet can be terminated when need be by simply disconnecting the source of electricity.
For example in lifting a heavy metal from one point to another if it gets to the point of dropping off the metal there will be a need to terminate the magnetism so that the metal can fall off; a regular magnet can not be used for this purpose.
