Electrical Engineering

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direct current

A Dictionary of Earth Sciences | 1999 | | Copyright

direct current A unidirectional current provided by a source of electrical energy. It is used in induced polarization surveys and in some electrical resistivity surveys, although very-low-frequency alternating current sources are being used increasingly to overcome problems of electrode and ground polarization.

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AILSA ALLABY and MICHAEL ALLABY. "direct current." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "direct current." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-directcurrent.html

AILSA ALLABY and MICHAEL ALLABY. "direct current." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-directcurrent.html

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direct current

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

di·rect cur·rent (abbr.: DC) • n. an electric current flowing in one direction only. Compare with alternating current.

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"direct current." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"direct current." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O999-directcurrent.html

"direct current." The Oxford Pocket Dictionary of Current English. 2009. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-directcurrent.html

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direct current

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

direct current abbr. DC, a movement of electric charge across an arbitrarily defined surface in one direction only. See electricity ; generator .

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direct current

World Encyclopedia | 2005 | Copyright

direct current (DC) See electric current

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