Current density Current density In electromagnetism, current density is the electric current per unit area of cross section. The current density vector is defined as a vector whose magnitude is the electric current per cross-sectional area at a given point in space, its direction being that of the motion of the charges at this point. In SI units, the electric current density is measured in amperes per square metre. Assume that "A" (SI unit: m) is a small surface centred at a given point "M" and orthogonal to the motion of the charges at "M". If "I" (SI unit: A) is the
University of Campinas School of Electrical and Computer Engineering University of Campinas School of Electrical and Computer Engineering The School of Electrical and Computer Engineering (, FEEC) is one of the most well-renowned engineering schools in Brazil. It was created in 1967 on UNICAMP's main campus in Campinas, São Paulo, Brazil, as the Department of Electrical Engineering () of the School of Engineering (). It became an independent unit in 1986, renamed the School of Electrical Engineering (). Subsequently, in 1996, it was changed to its current name, adding computer engineering courses in partnership with the Institute of Computing. Faculdade de Engenharia Elétrica e de Computação (FEEC) - UNICAMP