Electromagnetism Studies the Relationship Between Electricy and Magnetism

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Electromagnetism is the branch of physics that studies the relationship between electricity and magnetism. Electromagnets are magnets that uses an electric current to attract metal. Electromagnets have many parts that make up them and are used in many things.
Electromagnetism has a history that dates back over 200 years. The year 1700 was the first demonstration of an electromagnet, yet scientists didn't know much about electromagnetism (Bellis 1). In 1820, scientists had just started to get deep into electromagnets, Hans Oersted discovered that a conductor carrying an electric current was surrounded by a magnetic field (Bellis 2). Hans Oersted discovered this because his compass reacted to a battery when he connected them using wires. That is a big breakthrough because they can now make hypotheses about why the wire with current makes a magnetic field to rearrange the compass direction. In 1873, James Maxwell observed the interaction between positive and negative electrical charges (Brian, Looper 2000). Ben Franklin was the person to figure out that there is a positive and negative charge (Bellis 1). Electromagnetism is the branch of physics that studies the relationship between electricity and magnetism. Without magnetism, electricity couldn't exist, without electricity, magnetism couldn't exist.
An electromagnet is a magnet that uses an electric current to attract metal, such as wiring a battery to coils on a ferromagnetic material. Electromagnets are also used in many different ways, some you may not know use electromagnets. Electromagnets are used in places like scrapyards to pick up extremely heavy objects such as cars, etc (Jessa 2009). CAT scanners have electromagnets in them to see the things that they need to see. Electr...

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...net-Electricity and magnetism. In Encyclopedia Americana (Vol. 24, p. 99). mexico city: Grolier incorporated.

Wilson, T. (2007, April 2). How Magnets Work. HowStuffWorks. Retrieved November 1, 2013, from http://science.howstuffworks.com/magnet.htm

bellis, m. (1) (n.d.). Timeline of Electromagnetism. About.com Inventors. Retrieved October 18, 2013, from http://inventors.about.com/od/timelines/a/Electromagnets.htm

bellis, m. (2) (n.d.). History of Electromagnetism - Innovations Using Magnetic Fields. About.com Inventors. Retrieved October 11, 2013, from http://inventors.about.com/od/estartinventions/a/Electromagnets.htm

electromagnet (instrument). (n.d.). Encyclopedia Britannica Online. Retrieved October 31, 2013, from http://www.britannica.com/EBchecked/topic/183188/electromagnet

(2003). electromagnetism. In World Book (Vol. 31, p. 203). Chicago: World Book, inc.

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