Jmdonev: 1 revision imported

2018-05-18T22:53:08Z

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Jmdonev at 20:33, 11 May 2018

2018-05-11T20:33:08Z

← Older revision		Revision as of 20:33, 11 May 2018
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	#~~REDIRECT~~[[~~charge~~]]		[[Category:Done 2018-05-18]]
			[[Category:Phets]]
			[[File:Electron cloud2.gif\|framed\|right\|Figure 1. A drawing depicting what an atom looks like. The [[electron]] has a negative charge. The [[nucleus]] contains [[proton]]s which have positive charge and [[neutron]]s which have a neutral charge. Notice how much more area the electron cloud occupies compared to the nucleus.<ref>"The electron cloud" internet: http://letstalkaboutscience.wordpress.com/2012/02/16/the-electron-cloud/</ref>]]
			<onlyinclude>'''Electric charge''', or '''charge''' for short, is a fundamental physical property that causes objects to feel an attractive or repulsive [[force]] toward one another.</onlyinclude> The fundamental unit of charge is the [[coulomb]] (C). There are two types of charge: positive charge (exhibited by [[proton]]s), and negative charge (exhibited by [[electron]]s). [[Coulomb's law]] describes the electric forces between charged particles; if the charges move the [[electromagnetic force]] gets more complicated.

			The movement or [[electric current\|flow]] of charged particles is what produces [[electricity]] and [[magnet]]ism. In fact, a moving stream of electric charge is [[electric current]]. This movement of charge can be induced by the relative movement of a [[magnet]] and coil of [[wire]]—this is the fundamental design for [[electric generator]]s.

			When the number of electrons in an [[atom]] doesn't equal the number of protons, the atom is said to have a net charge. Charges add just like positive and negative numbers, so a charge of +1 exactly cancels a charge of -1. This is why positive and negative numbers are used to represent charge, the charges cancel just like positive and negative numbers. When a specific atom has a net charge, the atom is said to be an [[ion]] (the [[ion]] page includes a PhET simulation about this). The process of adding or removing charge from an atom is called ionizing, and when that's done with [[radiation]], that's called [[ionizing radiation]].

			Charge can also be separated from atoms (therefore making some ions) by rubbing different types of materials together. This is what creates an [[electric field]] around a balloon that's been rubbed on someone's hair, or a towel. This is also why [[static electricity]] builds up on clothes that have been tumbling around in a [[clothes dryer]]. There's a PhET simulation below on separating charge with [[friction]].

			To learn more about charge please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elecur.html#c2 hyperphysics].

			==PhET Simulation on Charge from friction==
			The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following PhET simulation. Static electricity comes from the separation of positive and negative charge through [[friction]] (this happens in a clothes dryer, which is why dryer sheets are needed). Net charges cause an electric force; note the polarization that happens in the wall. Check out the PhET animation below to explore how it works.

			<html><iframe src="http://phet.colorado.edu/sims/html/balloons-and-static-electricity/latest/balloons-and-static-electricity_en.html" width="832" height="459"></iframe></html>


			== For Further Reading ==
			For further information please see the related pages below:
			*[[Electric field]]
			*[[Electric force]]
			*[[Magnet]]
			*[[Electric current]]
			* Or explore a [[Special:Random\| random page!]]

			==References==
			{{Reflist}}

	~~[[Category:done 2014-09-16]]~~
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:31:01Z

1 revision imported

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J.williams at 16:53, 12 August 2015

2015-08-12T16:53:09Z

New page

#REDIRECT[[charge]]

[[Category:done 2014-09-16]]
[[Category:Uploaded]]

Electric charge - Revision history

Jmdonev: 1 revision imported

Jmdonev at 20:33, 11 May 2018

J.williams: 1 revision imported

J.williams at 16:53, 12 August 2015