Beginning with a broad picture of the electrical constituents of matter, the book proceeds with a discussion of static electricity, electricity in motion, and electrical circuits. It explains the uses of Ohm's Law, and the Power Equation, and makes applications of formulas involving Kirchoff's Laws. Emphasis is placed on various types of circuits--series, parallel, and series-parallel--and on the theory of induction as applied to electrical apparatus. The essentials of generators and motors are fully explained. The closing chapters include discussions on vacuum tubes, transformers, and electrical measuring device