Electricity 1 DC and basic 1-phase AC The 24 sections in this book take the reader through DC and basic 1-phase AC theory. Each section includes explanatory texts, step-by-step-explained calculations, and a balanced number of test-yourself exercises. Formulas and matmatics are explained thoroughly to make also unaccustomed matematicians comfortable. The over all aim is that the readers shall achieve active electricity thinking. . Revma.se has several textbooks for different learning methodes in electricity and electronics, with shorter or more comprehensive explanatory texts, always step-by-step-explained calculations, and a balanced number of test-yourself exercises