Excerpt from The Elements of Direct Current Electrical Engineering The main object of the authors of this work has been to bridge the gap existing between the elementary text-books on magnetism and simple current electricity, Ohm's Law, etc., and so many of the more advanced books which deal with the design point of view. Not only the authors, but also many of their friends, have often found difficulty in recommending to students a book which would, without containing many details of a nature more or less superﬂuous to the purpose, present in a concise form to second-year students at Universities and Technical Schools the theoretical principles underlying Direct Current Electrical Engineering. No attempt has been made to avoid the use of the Calculus where it simplifies proofs, since it is an essential to all students of engineering but, in this book, only a very elementary kwledge of that subject is demanded. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art techlogy to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.