Direct current - Revision history

Jmdonev: 1 revision imported

2018-05-18T22:53:11Z

1 revision imported

← Older revision	Revision as of 22:53, 18 May 2018
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Jmdonev at 22:24, 11 May 2018

2018-05-11T22:24:15Z

← Older revision		Revision as of 22:24, 11 May 2018
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	[[Category:Done ~~2015~~-06-11]]		[[Category:Done 2018-05-18]]
	[[category:Phets]]		[[category:Phets]]
	[[File:DC.gif\|framed\|right\|Figure 1 An animation from a PhET simulation<ref>http://phet.colorado.edu/sims/circuit-construction-kit/circuit-construction-kit-ac_en.jnlp</ref> of direct current which has been slowed down considerably. See [[alternating current]] for a comparison.]]		[[File:DC.gif\|framed\|right\|Figure 1: An animation from a PhET simulation<ref>http://phet.colorado.edu/sims/circuit-construction-kit/circuit-construction-kit-ac_en.jnlp</ref> of direct current which has been slowed down considerably. See [[alternating current]] for a comparison.]]
	<onlyinclude>Direct current (DC) is uni-directional, so the flow of [[charge]] is always in the same direction.</onlyinclude><ref name=A>R.T. Paynter, “Basic Electric Components and Meters,” in ''Introduction to Electricity'', 1rst ed. NJ: Prentice-Hall, 2011, ch. 2, sec. 2.3, pp. 43-49.</ref> As opposed to [[alternating current]], the direction and amperage of direct ~~current does~~ not change. It is used in many [[household electronics]] and in all devices that use [[battery\|batteries]].<ref ~~name=A~~>''What is Direct Current'' [Online]. Available:http://www.powerinverters.org/pages/What-is-Direct-Current.html</ref>		<onlyinclude>Direct current (DC) is an [[electric current]] that is uni-directional, so the flow of [[charge]] is always in the same direction.</onlyinclude><ref name=A>R.T. Paynter, “Basic Electric Components and Meters,” in ''Introduction to Electricity'', 1rst ed. NJ: Prentice-Hall, 2011, ch. 2, sec. 2.3, pp. 43-49.</ref> As opposed to [[alternating current]], the direction and amperage of direct currents do not change. It is used in many [[household electronics]] and in all devices that use [[battery\|batteries]].<ref>''What is Direct Current'' [Online]. Available:http://www.powerinverters.org/pages/What-is-Direct-Current.html</ref>

	==Properties==		==Properties==
	Direct [[current]] is defined by the constant flow of [[electron]]s (see figure 1) from an area of high electron density to an area of low electron density. In [[circuit]]s involving batteries, this is illustrated by the constant flow of [[charge]] from the negative [[terminal]] of the battery to the positive terminal of the battery. It is much more expensive and difficult to change the [[voltage]] of direct current as opposed to [[alternating current]], making it a poor choice for the high voltage [[electrical transmission\|transmission]] of [[electricity]]. However, for very long distances, [[HVDC transmission]] can be more efficient than alternating current<ref name=A/>.		Direct current is defined by the constant flow of [[electron]]s (see figure 1) from an area of high electron density to an area of low electron density. In [[circuit]]s involving batteries, this is illustrated by the constant flow of [[charge]] from the negative [[terminal]] of the battery to the positive terminal of the battery. It is much more expensive and difficult to change the [[voltage]] of direct current as opposed to [[alternating current]], making it a poor choice for the high voltage [[electrical transmission\|transmission]] of [[electricity]]. However, for very long distances, [[HVDC transmission]] can be more efficient than alternating current<ref name=A/>.

	==Uses==		==Uses==
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	==PhET Simulation==		==PhET Simulation==
	The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following PhET simulation. This simulation can be used to explore how direct and alternating currents work.		The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following PhET simulation. This simulation can be used to explore how direct and alternating currents work.

	<html>		<html>
	<~~div style="position: relative; width: 300px; height: 226px;"><a href~~="~~http~~://phet.colorado.edu/sims/~~circuit-construction-kit~~/circuit-construction-kit-~~ac_en.jnlp" style="text-decoration: none;"><img src="http://phet.colorado.edu~~/~~sims~~/circuit-construction-kit~~/circuit~~-~~construction-kit-ac-screenshot~~.~~png" alt="Circuit Construction Kit (AC+DC)" style="border: none;~~" width="~~300~~" height="~~226~~"~~/><div style~~="position: absolute; width: 200px; height: 80px; left: 50px; top: 73px; background-color: #FFF; opacity: 0.6; filter: alpha(opacity = 60);"></div><table style="position: absolute; width: 200px; height: 80px; left: 50px; top: 73px;"~~><tr><td style="text-align: center; color: #000; font-size: 24px; font-family: Arial,sans-serif;">Click to Run</td></tr></table></a~~></~~div~~>		<iframe src="https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction-kit-dc_en.html" width="800" height="600" scrolling="no" allowfullscreen></iframe>
	</html>		</html>

			== For Further Reading ==
			For further information please see the related pages below:

			*[[Electric circuit]]
			*[[Alternating current]]
			*[[Electric generator]]
			* Or explore a [[Special:Random\| random page!]]

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

J.williams: 1 revision imported

2015-08-26T21:30:44Z

1 revision imported

← Older revision	Revision as of 21:30, 26 August 2015
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J.williams at 22:46, 11 August 2015

2015-08-11T22:46:20Z

New page

[[Category:Done 2015-06-11]]
[[category:Phets]]
[[File:DC.gif|framed|right|Figure 1 An animation from a PhET simulation<ref>http://phet.colorado.edu/sims/circuit-construction-kit/circuit-construction-kit-ac_en.jnlp</ref> of direct current which has been slowed down considerably. See [[alternating current]] for a comparison.]]
<onlyinclude>Direct current (DC) is uni-directional, so the flow of [[charge]] is always in the same direction.</onlyinclude><ref name=A>R.T. Paynter, “Basic Electric Components and Meters,” in ''Introduction to Electricity'', 1rst ed. NJ: Prentice-Hall, 2011, ch. 2, sec. 2.3, pp. 43-49.</ref> As opposed to [[alternating current]], the direction and amperage of direct current does not change. It is used in many [[household electronics]] and in all devices that use [[battery|batteries]].<ref name=A>''What is Direct Current'' [Online]. Available:http://www.powerinverters.org/pages/What-is-Direct-Current.html</ref>

==Properties==
Direct [[current]] is defined by the constant flow of [[electron]]s (see figure 1) from an area of high electron density to an area of low electron density. In [[circuit]]s involving batteries, this is illustrated by the constant flow of [[charge]] from the negative [[terminal]] of the battery to the positive terminal of the battery. It is much more expensive and difficult to change the [[voltage]] of direct current as opposed to [[alternating current]], making it a poor choice for the high voltage [[electrical transmission|transmission]] of [[electricity]]. However, for very long distances, [[HVDC transmission]] can be more efficient than alternating current<ref name=A/>.

==Uses==
Direct current is used in any electronic device with a [[battery]] for a power source. It is also used to charge batteries, so rechargeable devices like laptops and cell phones come with an [[AC adapter]] that converts alternating current to direct current<ref name=A/>.

==PhET Simulation==
The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following PhET simulation. This simulation can be used to explore how direct and alternating currents work.
<html>
<div style="position: relative; width: 300px; height: 226px;"><a href="http://phet.colorado.edu/sims/circuit-construction-kit/circuit-construction-kit-ac_en.jnlp" style="text-decoration: none;"><img src="http://phet.colorado.edu/sims/circuit-construction-kit/circuit-construction-kit-ac-screenshot.png" alt="Circuit Construction Kit (AC+DC)" style="border: none;" width="300" height="226"/><div style="position: absolute; width: 200px; height: 80px; left: 50px; top: 73px; background-color: #FFF; opacity: 0.6; filter: alpha(opacity = 60);"></div><table style="position: absolute; width: 200px; height: 80px; left: 50px; top: 73px;"><tr><td style="text-align: center; color: #000; font-size: 24px; font-family: Arial,sans-serif;">Click to Run</td></tr></table></a></div>
</html>

==References==
{{reflist}}
[[Category:Uploaded]]