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electric potential




The work done against an electric field in bringing a unit charge to a given point from some arbitrary reference point (usually earthed), measured in volts (i.e., joules per coulomb). Charges will tend to flow from points at one potential to those at a lower potential, and potential difference, or voltage, thus plays the role of a driving force for electric current. In inductive circuits, the work done in bringing up the charge depends on the route taken, and potential ceases to be a useful concept.


Related category

   • ELECTRICITY AND MAGNETISM