what is a electromagnet in a 100 words or more?

Answer 1

An electromagnet is a type of magnet in which the magnetic field is produced by a flow of electric current. The magnetic field disappears when the current ceases.

for the other words click here:http://en.wikipedia.org/wiki/Electromagnet#Introduction

Answer 2

100 words or MORE? I love to expound on things that I know something (or even nothing) about. My favorite quote of Albert Einstein is: "Things should be explained as simple as possible, but not simpler."

An electromagnet is a coil of electrical conductor in which an electrical current is present.

One could also argue that if the current is removed, the coil is still an electromagnet that happens to be de-energized, like in a scrap metal yard where the scrap is released from the electromagnet by turning off the current.

Answer 3

An electromagnet is a temporary magnet made of a metal center and a wire twisted around it. When a current circulate in the wire, the metal finds itself getting a north pole and a south pole, just like a magnet. When the current stops, then the metal is not a magnet anymore. Although some metals keep their magnetism for some time (this is called remanence).

You fill out the rest to get 100 words :-)

Answer 4

a thin bar of soft iron changes into a magnet when electricity is passed through it.this is called an electromagnet.it loses its magnetising properties when the current supply is stopped.it cannot be demagnetized by breaking coz then each particle behaves as a separate magnet on its own

Answer 5

http://en.wikipedia.org/wiki/Electromagnet

Answer 6

Thats lazy my friend, very lazy :P

Answer 7

Hey its your homework ,not mine