- Electromagnet - Wikipedia, the free encyclopedia
Page move-protected. An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of ...
http://en.wikipedia.org/wiki/Electromagnet
- What is an electromagnet? - Science Education at Jefferson Lab
An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet , the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can ...
http://education.jlab.org/qa/electromagnet_is.html
- Electromagnet
The electromagnet developed from a series of observations. In 1820 Hans Christian Oersted (1777-1851) discovered that a current-carrying wire set up a magnetic field. In the same year, André-Marie Ampère (1775-1835) discovered that a ...
http://physics.kenyon.edu/EarlyApparatus/Electricity/Electromagnet/Electromagn..
- Amazon.com: Electromagnets: Electromagnets: Music
Nova Scotia. 8. Crusades (Bonus Track). 9. Hawaiian Punch (Live). 10. Dry Ice ( Live). Editorial Reviews. All products are BRAND NEW and factory sealed. Fast shipping and 100% Satisfaction Guaranteed. Customer Reviews. 5 star. 13 · 4 star ...
http://www.amazon.com/Electromagnets/dp/B000009NKK
- What is the difference between a magnet and an electromagnet
The difference between an electromagnet and a magnet is that an electromagnet has to use electricity and a magnet is just a regular magnet ... Electromagnet: A type of magnet whose magnetic field is produced by the flow of electric current.
http://wiki.answers.com/Q/What_is_the_difference_between_a_magnet_and_an_elect..
- What is an Electromagnet? - wiseGEEK
An electromagnet is a conductive metal object surrounded by coiled wire with a current flowing through it, creating a magnetic...
http://www.wisegeek.com/what-is-an-electromagnet.htm
- Magnets and Electromagnets - Magnetism, Magnetic Field ...
Explore the interactions between a compass and bar magnet. Discover how you can use a battery and wire to make a magnet! Can you make it a stronger magnet ? Can you make the magnetic field reverse?
http://phet.colorado.edu/en/simulation/magnets-and-electromagnets
- Magnets and Electromagnets
Bar Magnet. The lines of magnetic field from a bar magnet form closed lines. By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Permanent magnets can be made from ...
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.html
- Information for Kids About Electromagnets | eHow.com
Information for Kids About Electromagnets. Magnets attract, or pull, some kinds of metal objects. Stronger magnets exert a greater pull on the objects they attract. Sometimes it would be useful if you could "turn off" a magnet when you did not ...
http://www.ehow.com/about_5558608_information-kids-electromagnets.html
- electromagnet - definition of electromagnet by the Free Online ...
e·lec·tro·mag·net ( -l k tr -m g n t). n. A magnet consisting essentially of a coil of insulated wire wrapped around a soft iron core that is magnetized only when current flows through the wire.
http://www.thefreedictionary.com/electromagnet
