Resistance - Revision history

Jmdonev: 1 revision imported

2026-06-04T17:17:00Z

1 revision imported

← Older revision	Revision as of 17:17, 4 June 2026
(No difference)

Energy>Jmdonev: /* PhET: Resistance in a wire */

2026-05-22T23:01:15Z

PhET: Resistance in a wire

← Older revision		Revision as of 23:01, 22 May 2026
Line 1:		Line 1:
	[[Category:Done ~~2018~~-05-18]]		[[Category:Done 2026-06-01]]
	[[Category: Phets]]		[[Category: Phets]]
	[[File:power line.jpg\|300px\|thumb\|Figure 1. High voltage power lines are used for the transmission of electricity over long distances.<ref>Wikimedia Commons [Online], Available: http://commons.wikimedia.org/wiki/File:Ligne_haute-tension.jpg</ref> These are specially designed to have low resistance, so little [[energy]] is lost in [[electrical transmission]].]]		[[File:power line.jpg\|300px\|thumb\|Figure 1. High voltage power lines are used for the transmission of electricity over long distances.<ref>Wikimedia Commons [Online], Available: http://commons.wikimedia.org/wiki/File:Ligne_haute-tension.jpg</ref> These are specially designed to have low resistance, so little [[energy]] is lost in [[electrical transmission]].]]
Line 9:		Line 9:

	==PhET: Resistance in a wire==		==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:		The [https://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>		<html><iframe src="https://phet.colorado.edu/sims/html/resistance-in-a-wire/latest/resistance-in-a-wire_en.html" width="800" height="600"></iframe></html>

	== For Further Reading ==		== For Further Reading ==

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 21:42, 18 May 2018

2018-05-18T21:42:33Z

← Older revision		Revision as of 21:42, 18 May 2018
Line 1:		Line 1:
	[[Category:Done ~~2015~~-09-06]]		[[Category:Done 2018-05-18]]
	[[Category: Phets]]		[[Category: Phets]]
	<onlyinclude>Resistance is similar to [[friction]] for [[electrical energy]]; resistance causes the [[electrical energy]] to be lost as heat ([[thermal energy]]), just like friction causes [[mechanical energy]] to be lost as [[heat]].</onlyinclude>		[[File:power line.jpg\|300px\|thumb\|Figure 1. High voltage power lines are used for the transmission of electricity over long distances.<ref>Wikimedia Commons [Online], Available: http://commons.wikimedia.org/wiki/File:Ligne_haute-tension.jpg</ref> These are specially designed to have low resistance, so little [[energy]] is lost in [[electrical transmission]].]]
			<onlyinclude>[[Resistance]] is similar to [[friction]] for [[electrical energy]]; resistance causes the [[electrical energy]] to be lost as heat ([[thermal energy]]), just like friction causes [[mechanical energy]] to be lost as [[heat]].</onlyinclude>

	Resistance is a measure of how much [[voltage]] an electrical element needs in order to increase the ~~electrical~~ [[current]]. The actual resistance depends on both the [[resistivity]] and the geometry of the [[wire]]. Resistivity is a property of the material ([[metal]]s have low resistivity; [[wood]] has high resistivity)~~. Resistivity of a material helps determine how well it will conduct [[electricity]]~~. A higher resistance results in a lower current for a given voltage. Resistance is measured in [[Ohm]]s (Ω).		Resistance is a measure of how much [[voltage]] an electrical element needs in order to increase the [[electric current]]. The actual resistance depends on both the [[resistivity]] and the geometry of the [[wire]].<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> Resistivity is a property of the material that helps determine how well it will conduct [[electricity]] ([[metal]]s have low resistivity; [[wood]] has high resistivity). A higher resistance results in a lower current for a given voltage. Resistance is measured in [[Ohm]]s (Ω).

	While it is easy to think of resistance as a bad thing, many electronic [[circuit]]s require [[resistor]]s (objects with high resistance, deliberately ~~put in~~ a circuit) to function! The resistance of a wire increases as its length increases and decreases as its thickness increases. When conducting [[electricity]] over long distances, like the [[electrical grid]], it's important to keep the resistance as low as possible. The wires in the electrical grid have a low resistivity and fairly large cross-sectional areas to allow them to conduct electricity over long distances with minimal loss. Please play with the simulation below to see how these values affect resistance.		While it is easy to think of resistance as a bad thing, many electronic [[circuit]]s require [[resistor]]s (objects with high resistance deliberately added to a circuit) to function!<ref name=Knight/>The resistance of a wire increases as its length increases and decreases as its thickness increases. When conducting [[electricity]] over long distances, like the [[electrical grid]], it's important to keep the resistance as low as possible. The wires in the electrical grid have a low resistivity and fairly large cross-sectional areas to allow them to conduct electricity over long distances with minimal loss. Please play with the simulation below to see how these values affect resistance.

	==PhET: Resistance in a wire==		==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:		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>		<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>

			== For Further Reading ==
			For further information please see the related pages below:
			*[[Electric circuit]]
			*[[Inductance]]
			*[[Superconductor]]
			*[[Electrical transmission]]
			* Or explore a [[Special:Random\| random page!]]

			==References==
			{{Reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]
	~~[[category: Mark edit]]~~

J.williams: 1 revision imported

2015-09-18T16:52:05Z

1 revision imported

← Older revision	Revision as of 16:52, 18 September 2015
(No difference)

Jmdonev at 20:08, 17 September 2015

2015-09-17T20:08:31Z

← Older revision		Revision as of 20:08, 17 September 2015
Line 1:		Line 1:
	[[Category:Done 2015-01-15 ]]		[[Category:Done 2015-09-06]]
	[[Category: Phets]]		[[Category: Phets]]
	<onlyinclude>Resistance is similar to [[friction]] for [[electrical energy]]; resistance causes the [[electrical energy]] to be lost as heat ([[thermal energy]]), just like friction causes [[mechanical energy]] to be lost as [[heat]].</onlyinclude>		<onlyinclude>Resistance is similar to [[friction]] for [[electrical energy]]; resistance causes the [[electrical energy]] to be lost as heat ([[thermal energy]]), just like friction causes [[mechanical energy]] to be lost as [[heat]].</onlyinclude>

	Resistance is a measure of how much voltage an electrical element needs in order to increase the electrical [[current]]. The actual resistance depends on both the [[resistivity]] and the geometry of the wire. Resistivity is a property of the material (~~metals~~ have low resistivity; wood has high resistivity). Resistivity of a material helps determine how well it will conduct [[electricity]]. A higher resistance results in a lower current for a given voltage. Resistance is measured in [[Ohm]]s (Ω).		Resistance is a measure of how much [[voltage]] an electrical element needs in order to increase the electrical [[current]]. The actual resistance depends on both the [[resistivity]] and the geometry of the [[wire]]. Resistivity is a property of the material ([[metal]]s have low resistivity; [[wood]] has high resistivity). Resistivity of a material helps determine how well it will conduct [[electricity]]. A higher resistance results in a lower current for a given voltage. Resistance is measured in [[Ohm]]s (Ω).

	While it is easy to think of resistance as a bad thing, many electronic ~~circuits~~ require [[resistor]]s (objects with high resistance, deliberately put in a circuit) to function! The resistance of a wire increases as its length increases and decreases as its thickness increases. When conducting [[electricity]] over long distances, like the [[electrical grid]], it's important to keep the resistance as low as possible. The wires in the electrical grid have a low resistivity and fairly large cross-sectional areas to allow them to conduct electricity over long distances with minimal loss. Please play with the simulation below to see how these values affect resistance.		While it is easy to think of resistance as a bad thing, many electronic [[circuit]]s require [[resistor]]s (objects with high resistance, deliberately put in a circuit) to function! The resistance of a wire increases as its length increases and decreases as its thickness increases. When conducting [[electricity]] over long distances, like the [[electrical grid]], it's important to keep the resistance as low as possible. The wires in the electrical grid have a low resistivity and fairly large cross-sectional areas to allow them to conduct electricity over long distances with minimal loss. Please play with the simulation below to see how these values affect resistance.

	==PhET: Resistance in a wire==		==PhET: Resistance in a wire==
Line 11:		Line 11:
	<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>		<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]]		[[Category:Uploaded]]
			[[category: Mark edit]]

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 2015-01-15 ]]
[[Category: Phets]]
<onlyinclude>Resistance is similar to [[friction]] for [[electrical energy]]; resistance causes the [[electrical energy]] to be lost as heat ([[thermal energy]]), just like friction causes [[mechanical energy]] to be lost as [[heat]].</onlyinclude>

Resistance is a measure of how much voltage an electrical element needs in order to increase the electrical [[current]]. The actual resistance depends on both the [[resistivity]] and the geometry of the wire. Resistivity is a property of the material (metals have low resistivity; wood has high resistivity). Resistivity of a material helps determine how well it will conduct [[electricity]]. A higher resistance results in a lower current for a given voltage. Resistance is measured in [[Ohm]]s (Ω).

While it is easy to think of resistance as a bad thing, many electronic circuits require [[resistor]]s (objects with high resistance, deliberately put in a circuit) to function! The resistance of a wire increases as its length increases and decreases as its thickness increases. When conducting [[electricity]] over long distances, like the [[electrical grid]], it's important to keep the resistance as low as possible. The wires in the electrical grid have a low resistivity and fairly large cross-sectional areas to allow them to conduct electricity over long distances with minimal loss. Please play with the simulation below to see how these values affect resistance.

==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]]