The EM field of constant current density distributions in parallelepiped regions

The electromagnetic field vectors (A) over bar, (H) over bar, (E) over bar arising from a constant current density (J) over bar in an electrically small orthogonal parallelepiped region v are obtained analytically and exactly, up to order (kr)(4), af any point (x, y, z) a distance r from the center of v, They are then applied to the solution of an electric field integrodifferential equation (EFIDE) for which the region V has been divided into small parallelepiped cells, These new results are directly applicable to the evaluation of electromagnetic field interaction with natural media.