https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/9abe9fdb-59f3-4bd6-b24f-b9b7e46eae7c ELECTRIC FIELDS/ELECTRIC CURRENTS An electric field is the region in which electric forces can be observed, e.g. near a charged particle. As a field, it may also be viewed as a region of space modified by the presence of electric charges. An electric current is a continuous flow of electrons and/or ions, through a material which conducts electricity. A current usually flows in a closed circuit, without beginning or end. In daily life, currents are generally driven through wires by voltages produced by batteries or generators. In space plasmas, currents are produced by the movement of charged paricles in the presence of a magnetic field.