This text presents the unity of electromagnetism based on the premise that electromagnetism is Maxwell's field equations in the same way as Newton's Laws of motion are classical mechanics. Thus, instead of the more usual historical development of the subject, David Dugdale's book introduces the student to Maxwell's field equations at the earliest opportunity in order that they serve as a basis for everything that follows. Familiarity with the basic facts and laws of electricity and magnetism is assumed, with only a brief review given in the text. Each chapter contains numerous worked and unworked problems which assist the reader in assessing their understanding of the theory.