direct current

views updated May 11 2018

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

direct current

views updated May 08 2018

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.

direct current

views updated May 23 2018

direct current (DC) See electric current