Jmdonev: 1 revision imported

2018-05-11T18:17:04Z

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Jmdonev at 17:18, 9 May 2018

2018-05-09T17:18:45Z

← Older revision		Revision as of 17:18, 9 May 2018
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	[[Category:Done ~~2015~~-09-05]]		[[Category:Done 2018-04-30]]
	[[~~Category~~:~~Needs citations~~]]		[[File:power line.jpg\|300px\|thumb\|Figure 1. High voltage power lines are made out of aluminum, because of it's high electrical conductivity.<ref>Wikimedia Commons [Online], Available: http://commons.wikimedia.org/wiki/File:Ligne_haute-tension.jpg</ref>]]
	<onlyinclude>'''Electrical conductivity''' is a property of materials that determines how well a given material will conduct [[electricity]].</onlyinclude> Electrical conductivity is closely related to [[resistivity]] (which is more commonly used):		<onlyinclude>'''Electrical conductivity''' is a property of materials that determines how well a given material will conduct [[electricity]].</onlyinclude> Electrical conductivity is closely related to [[resistivity]] (which is more commonly used):

	<m>\sigma = \frac{1}{\rho}</m>		<center><math>\sigma = \frac{1}{\rho}</math></center>

	where <m>{\sigma}</m> is the conductivity (in [[meter\|m]]/[[Ohm]]) and <m>\rho</m> is the resistivity (in [[Ohm]]/[[meter\|m]]). To determine the resistance of a [[wire]] (which could be made of almost anything: [[copper]], [[aluminum]]; this equation even works for wood!), use:		where <math>{\sigma}</math> is the conductivity (in [[meter\|m]]/[[Ohm]]) and <math>\rho</math> is the resistivity (in [[Ohm]]/[[meter\|m]]). To determine the resistance of a [[wire]] (which could be made of almost anything: [[copper]], [[aluminum]]; this equation even works for wood!), use:

	<m>R = \rho \frac{A}{l}= \frac{A}{\sigma l}</m>		<center><math>R = \rho \frac{A}{l}= \frac{A}{\sigma l}</math></center>

	where <m>A</m> is the cross-sectional area of the wire (in m<sup>2</sup>) and <m>l</m> is its length (in m).		where <math>A</math> is the cross-sectional area of the wire (in m<sup>2</sup>) and <math>l</math> is its length (in m).

	Electrical conductivity is closely related to [[electrical conductance]]. Electrical conductivity is a property of the material itself (like [[silver]]), while electrical conductance is a property of a particular electrical component (like a particular [[wire]]).		Electrical conductivity is closely related to [[electrical conductance]]. Electrical conductivity is a property of the material itself (like [[silver]]), while electrical conductance is a property of a particular electrical component (like a particular [[wire]]).
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	Electrical conductivity can be defined as how much [[voltage]] is required to get an amount of electric [[current]] to flow. This is largely determined by the number of [[electron]]s in the outermost shell; these electrons determine the ease with which mobile electrons are generated. Another factor--but a less important one--is the number of atoms per unit [[volume]], which determines the number of electrons that will readily move in response to an [[electric field]]. Materials with high conductivity, like copper and aluminum, are called [[conductor]]s. Materials with low conductivity, like rubber and glass, are called [[electrical insulator]]s (or just insulators when there's no possibility of confusion with thermal [[insulation]]). Another special class of materials like [[silicon]] and [[germanium]] are in between and are called [[semiconductor]]s.		Electrical conductivity can be defined as how much [[voltage]] is required to get an amount of electric [[current]] to flow. This is largely determined by the number of [[electron]]s in the outermost shell; these electrons determine the ease with which mobile electrons are generated. Another factor--but a less important one--is the number of atoms per unit [[volume]], which determines the number of electrons that will readily move in response to an [[electric field]]. Materials with high conductivity, like copper and aluminum, are called [[conductor]]s. Materials with low conductivity, like rubber and glass, are called [[electrical insulator]]s (or just insulators when there's no possibility of confusion with thermal [[insulation]]). Another special class of materials like [[silicon]] and [[germanium]] are in between and are called [[semiconductor]]s.

	Generally, most [~~http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/~~metal~~.html#c1 metals~~] have high conductivity (which is another way of saying metals tend to be [[conductor]]s), because the electrons in their outermost shell can move easily. Non-metals tend to have low conductivity.		Generally, most [[metal]]s have high conductivity (which is another way of saying metals tend to be [[conductor]]s), because the electrons in their outermost shell can move easily. Non-metals tend to have low conductivity.<ref> Hyperphysics, conductors and insulators, Accessed May 9th, 2018: http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c1</ref>

	To learn about the physics behind conductivity please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c1 hyperphysics].		To learn about the physics behind conductivity please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c1 hyperphysics].

			== For Further Reading ==
			For further information please see the related pages below:
			*[[Direct current]]
			*[[Alternating current]]
			*[[Electrical grid]]
			*[[Resistance]]
			* Or explore a [[Special:Random\| random page!]]

			==References==
			{{Reflist}}

	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:30:51Z

1 revision imported

← Older revision	Revision as of 21:30, 26 August 2015
(No difference)

Jmdonev at 15:21, 26 August 2015

2015-08-26T15:21:25Z

New page

[[Category:Done 2015-09-05]]
[[Category:Needs citations]]
<onlyinclude>'''Electrical conductivity''' is a property of materials that determines how well a given material will conduct [[electricity]].</onlyinclude> Electrical conductivity is closely related to [[resistivity]] (which is more commonly used):

<m>\sigma = \frac{1}{\rho}</m>

where <m>{\sigma}</m> is the conductivity (in [[meter|m]]/[[Ohm]]) and <m>\rho</m> is the resistivity (in [[Ohm]]/[[meter|m]]). To determine the resistance of a [[wire]] (which could be made of almost anything: [[copper]], [[aluminum]]; this equation even works for wood!), use:

<m>R = \rho \frac{A}{l}= \frac{A}{\sigma l}</m>

where <m>A</m> is the cross-sectional area of the wire (in m<sup>2</sup>) and <m>l</m> is its length (in m).

Electrical conductivity is closely related to [[electrical conductance]]. Electrical conductivity is a property of the material itself (like [[silver]]), while electrical conductance is a property of a particular electrical component (like a particular [[wire]]).

Electrical conductivity can be defined as how much [[voltage]] is required to get an amount of electric [[current]] to flow. This is largely determined by the number of [[electron]]s in the outermost shell; these electrons determine the ease with which mobile electrons are generated. Another factor--but a less important one--is the number of atoms per unit [[volume]], which determines the number of electrons that will readily move in response to an [[electric field]]. Materials with high conductivity, like copper and aluminum, are called [[conductor]]s. Materials with low conductivity, like rubber and glass, are called [[electrical insulator]]s (or just insulators when there's no possibility of confusion with thermal [[insulation]]). Another special class of materials like [[silicon]] and [[germanium]] are in between and are called [[semiconductor]]s.

Generally, most [http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/metal.html#c1 metals] have high conductivity (which is another way of saying metals tend to be [[conductor]]s), because the electrons in their outermost shell can move easily. Non-metals tend to have low conductivity.

To learn about the physics behind conductivity please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/conins.html#c1 hyperphysics].
[[Category:Uploaded]]

Electrical conductivity - Revision history

Jmdonev: 1 revision imported

Jmdonev at 17:18, 9 May 2018

J.williams: 1 revision imported

Jmdonev at 15:21, 26 August 2015