Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 23

electricity - SI electricity units

charges charge phenomena exists

Phenomena associated with electrical charges and currents, and the study of such phenomena. Between collections of positive and negative charges there exists a potential difference. If a conducting path exists between the two charge groups, charges will flow from one to the other, constituting an electric current. Electric charge which builds up on an insulator and is thus unable to flow is termed static electricity.

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