Abstract
Abstract Maxwell’s theory of electromagnetism in free space involves two fields: the electric field, E, and the magnetic field, M. When material media are present two more fields are introduced: the electric displacement, D, and the magnetic induction, B, for a total of four, all of which are position dependent in general. E and D are related through a third field, the polarization field, P, according to D = E + 4πP in c.g.s. units. P arises from a distribution of microscopic electric dipoles within the material. This chapter focuses on electric behaviours associated with the two fields. It discusses the potential from a distribution of dipoles; the local electric field; the dielectric constant; orientational polarization; and dielectric relaxation. Sample problems are also provided at the end of the chapter.
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