Ohm's law - Revision history

Jmdonev: 1 revision imported

2026-08-04T20:43:46Z

1 revision imported

← Older revision	Revision as of 20:43, 4 August 2026
(No difference)

energy>Jmdonev at 20:43, 6 July 2026

2026-07-06T20:43:48Z

← Older revision		Revision as of 20:43, 6 July 2026
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	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2018~~-04-30]]		[[Category:Done 2026-08-01]]
	<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[electric current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:		<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[electric current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:
	<br />		<br />
Line 12:		Line 12:
	==Phet Simulation==		==Phet Simulation==
	The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.		The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.

			<html><iframe src="http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width="816" height="459"></iframe></html>

	== For Further Reading ==		== For Further Reading ==
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	* Or explore a [[Special:Random\| random page!]]		* Or explore a [[Special:Random\| random page!]]

			==References==
	~~<html><iframe src~~=~~"http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width~~=~~"816" height~~=~~"459"></iframe></html>~~		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported

2018-05-11T18:17:04Z

1 revision imported

← Older revision	Revision as of 18:17, 11 May 2018
(No difference)

Jmdonev at 17:53, 9 May 2018

2018-05-09T17:53:24Z

← Older revision		Revision as of 17:53, 9 May 2018
Line 1:		Line 1:
	[[Category:Phets]]		[[Category:Phets]]
	[[Category:Done ~~2017~~-07-~~01]]~~		[[Category:Done 2018-04-30]]
	~~[[Category: Needs citations~~]]		<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[electric current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:
	<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:
	<br />		<br />
	:<math>I=\frac{V}{R}</math>		:<math>I=\frac{V}{R}</math>
Line 13:		Line 12:
	==Phet Simulation==		==Phet Simulation==
	The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.		The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.

			== 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!]]


	<html><iframe src="http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width="816" height="459"></iframe></html>		<html><iframe src="http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width="816" height="459"></iframe></html>
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported

2017-08-29T01:46:45Z

1 revision imported

← Older revision	Revision as of 01:46, 29 August 2017
(No difference)

Jmdonev at 22:28, 16 August 2017

2017-08-16T22:28:50Z

← Older revision		Revision as of 22:28, 16 August 2017
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	[[Category:Phets]][[Category:Done ~~2015~~-02-15]] [[Category: Needs citations]]		[[Category:Phets]]
			[[Category:Done 2017-07-01]]
			[[Category: Needs citations]]
	<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:		<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:
			<br />
	:<m>I=\frac{V}{R}</m>		:<math>I=\frac{V}{R}</math>
	:''I'' = the current in the circuit (measured in [[ampere]]s)		:<math>I</math> = the current in the circuit (measured in [[ampere]]s)
	:''V'' = potential difference (measured in [[volt]]s)		:<math>V</math> = potential difference (measured in [[volt]]s)
	:''R'' = the circuit resistance (measured in [[ohm]]s) - which '''remains constant''' in order to obey Ohm's law.		:<math>R</math> = the circuit resistance (measured in [[ohm]]s) - which '''remains constant''' in order to obey Ohm's law.

	For more details on Ohm's law please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmlaw.html#c1 hyperphysics]; which also has a [http://hyperphysics.phy-astr.gsu.edu/hbase/tables/rstiv.html microscopic description].		For more details on Ohm's law please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmlaw.html#c1 hyperphysics]; which also has a [http://hyperphysics.phy-astr.gsu.edu/hbase/tables/rstiv.html microscopic description].

	==Phet Simulation==		==Phet Simulation==
	The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.~~<br />~~		The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.


	<html><iframe src="http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width="816" height="459"></iframe></html>		<html><iframe src="http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width="816" height="459"></iframe></html>
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev at 21:22, 7 July 2017

2017-07-07T21:22:15Z

← Older revision		Revision as of 21:22, 7 July 2017
Line 1:		Line 1:
	[[Category:Phets]][[Category:Done 2015-02-15]] [[Category: Needs citations]]		[[Category:Phets]][[Category:Done 2015-02-15]] [[Category: Needs citations]]
	<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:		<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage\|potential difference]] (voltage), [[current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:
	~~<br />~~
	:<m>I=\frac{V}{R}</m>		:<m>I=\frac{V}{R}</m>
	:''I'' = the current in the circuit (measured in [[ampere]]s)		:''I'' = the current in the circuit (measured in [[ampere]]s)

J.williams: 1 revision imported

2015-08-26T21:31:50Z

1 revision imported

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

J.williams at 17:01, 12 August 2015

2015-08-12T17:01:48Z

New page

[[Category:Phets]][[Category:Done 2015-02-15]] [[Category: Needs citations]]
<onlyinclude>'''Ohm's law''' is a mathematical expression that describes the relation between [[voltage|potential difference]] (voltage), [[current]], and [[resistance]].</onlyinclude> In order for a material to obey Ohm's law the resistance must remain constant - meaning that the current and potential difference must be proportional to each other. While Ohm's law is actually only an approximation, it works very well over an incredibly wide range of voltages. With that being said, it ''is'' possible to change the resistance of a circuit, but the only way to do so is to physically install/remove additional resistors ''before'' using or analyzing the circuit:
<br />
:<m>I=\frac{V}{R}</m>
:''I'' = the current in the circuit (measured in [[ampere]]s)
:''V'' = potential difference (measured in [[volt]]s)
:''R'' = the circuit resistance (measured in [[ohm]]s) - which '''remains constant''' in order to obey Ohm's law.

For more details on Ohm's law please see [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmlaw.html#c1 hyperphysics]; which also has a [http://hyperphysics.phy-astr.gsu.edu/hbase/tables/rstiv.html microscopic description].

==Phet Simulation==
The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. This simulation explores Ohm's Law. '''Note:''' This simulation allows the adjustment of resistance; however, notice when you adjust the voltage only the current changes (proportionally). This implies that '''resistance remains constant'''. What this simulation allows you to do is change the actual physical properties of the resistor in order to see how different resistors affect circuits. In reality it isn't possible to change the resistance without changing the physical properties of the circuit.<br />

<html><iframe src="http://phet.colorado.edu/sims/html/ohms-law/latest/ohms-law_en.html" width="816" height="459"></iframe></html>
[[Category:Uploaded]]