In electromagnetism, and related fields in solid state physics, condensed matter physics etc. current density is the electric current per unit area of cross section. It is defined as a vector whose magnitude is the electric current per cross-sectional area. In SI units, the electric current density is measured in amperes per square metre.
Famous quotes containing the word current:
“Talent develops in quiet places, character in the full current of human life.”
—Johann Wolfgang Von Goethe (17491832)