Direct current
This is the current revision of Direct current as edited by DavidB4 (talk | contribs) at 02:05, June 21, 2018. This URL is a permanent link to this version of this page.
Direct Current (DC) is a voltage or current that does not vary with time. It is the form in which electricity is generated by a chemical cell (battery), a solar cell (photovoltaic) or a DC generator. DC is not used for power transmission because it cannot be manipulated by a transformer.