This book, first published in 1914, provides a guide to the more general mathematical theorems used by electricians in their everyday work.First published in 1914, as the second edition of a 1904 original, this book forms part one of a two-volume series written to provide a guide to the more general mathematical theorems used by electricians in their everyday work. Illustrative figures are incorporated throughout the text.First published in 1914, as the second edition of a 1904 original, this book forms part one of a two-volume series written to provide a guide to the more general mathematical theorems used by electricians in their everyday work. Illustrative figures are incorporated throughout the text.First published in 1914, as the second edition of a 1904 original, this book forms part one of a two-volume series written to provide a guide to the more general mathematical theorems used by electricians in their everyday work. Illustrative figures are incorporated throughout the text. This book will be of value to anyone with an interest in electricity, physics and the history of science.1. Introduction. Electrostatics. Magnetism. Electrodynamics; 2. Alternating current in an inductive circuit. Self inductance formulae. Rectangle concentric main. Cylindrical wires; 3. The inductance of circular and helical currents. Rayleigh's formula. Maximum inductance. Mutual inductance of coaxial coils. Lorenz's formula. Mathematical tables; 4. Effective values. Choking coil and condenser currents. Effects of wave shape. Resonance; 5. Electrostatic capacity. Maxwell's equations. Capacity formulae for parallel cylinders. The capacities of three core cables in terms of Maxwell's coefficients; 6. Capacity formulae for cables. The capacity coefficients of overhead wires; 7. High frequency currents. Complete solution for a concentric main. Parallel conductors. Mathematical tables; 8. Problems in connection with spherical electrodes. The capacity coefficients. The attractions and replCZ