Resistivity - Revision history

Jmdonev: 1 revision imported

2018-05-18T22:53:17Z

1 revision imported

← Older revision	Revision as of 22:53, 18 May 2018
(No difference)

Jmdonev at 21:41, 18 May 2018

2018-05-18T21:41:58Z

← Older revision		Revision as of 21:41, 18 May 2018
Line 1:		Line 1:
	[[Category:Done ~~2015~~-03-06]] [[category:Phets~~]] [[Category: Needs Citations~~]]		[[Category:Done 2018-05-18]]
	<onlyinclude>'''Resistivity''' is a property of materials that determines how well that material will conduct [[electricity]]. This property is closely related to [[resistance]] which is the property of a particular electrical component.</onlyinclude> Resistivity is also closely related to [[electrical conductivity]]:		[[category:Phets]]
			<onlyinclude>'''Resistivity''' is a property of materials that determines how well that material will conduct [[electricity]]. This property is closely related to [[resistance]] which is the property of a particular electrical component.</onlyinclude> Resistivity is also closely related to [[electrical conductivity]]:<ref name=Knight>R. D. Knight, "Conductivity and resistivity" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 2nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, pp. 954-956</ref>

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

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

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

	where <m>A</m> is the area (in m<sup>2</sup>) and <m>l</m> is the length (in [[meter\|m]]).		where <math>A</math> is the area (in m<sup>2</sup>) and <math>l</math> is the length (in [[meter\|m]]).

	For more detailed information on resistivity please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html#c2hyperphysics hyperphysics]. Hyperphysics also has a [http://hyperphysics.phy-astr.gsu.edu/hbase/tables/rstiv.html table of resistivities] for different materials. Resistivity also depends on [[temperature]], which is also explained on [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/restmp.html hyperphysics].		For more detailed information on resistivity please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html#c2hyperphysics hyperphysics]. Hyperphysics also has a [http://hyperphysics.phy-astr.gsu.edu/hbase/tables/rstiv.html table of resistivities] for different materials. Resistivity also depends on [[temperature]], which is also explained on [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/restmp.html hyperphysics].

J.williams: 1 revision imported

2015-08-26T21:31:36Z

1 revision imported

← Older revision	Revision as of 21:31, 26 August 2015
(No difference)

J.williams at 16:58, 12 August 2015

2015-08-12T16:58:53Z

New page

[[Category:Done 2015-03-06]] [[category:Phets]] [[Category: Needs Citations]]
<onlyinclude>'''Resistivity''' is a property of materials that determines how well that material will conduct [[electricity]]. This property is closely related to [[resistance]] which is the property of a particular electrical component.</onlyinclude> Resistivity is also closely related to [[electrical conductivity]]:

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

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

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

where <m>A</m> is the area (in m<sup>2</sup>) and <m>l</m> is the length (in [[meter|m]]).

For more detailed information on resistivity please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html#c2hyperphysics hyperphysics]. Hyperphysics also has a [http://hyperphysics.phy-astr.gsu.edu/hbase/tables/rstiv.html table of resistivities] for different materials. Resistivity also depends on [[temperature]], which is also explained on [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/restmp.html hyperphysics].

==PhET: Resistance in a wire==
The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. Explore the simulation to see how resistance changes depending on geometry and resistivity:
<html><iframe src="http://phet.colorado.edu/sims/html/resistance-in-a-wire/latest/resistance-in-a-wire_en.html" width="800" height="600"></iframe></html>
[[Category:Uploaded]]