# Lessons in Electric Circuits: Volume I - DC

### by Tony R. Kuphaldt |19 Chapters

#### A free series of textbooks on the subjects of electricity and electronics

This is the first in a six volume open-source textbook provided by Tony R. Kuphaldt.  Although electrical engineering is a diverse field with many sub-specialties, Tony hits all of the fundamental topics in this six volume open-source series, starting with DC Circuits.  We’re integrating this open-source textbook into the CircuitBread platform as we have reviewed this book and think it is an excellent, invaluable addition to the canon of electrical engineering textbooks and want to add to its value by creating a great user experience with additional features like lightning fast page turning, bookmarking, content highlighting, glossaries, and note-taking.  We are grateful for the work that he has put into this textbook and hope that the CircuitBread interface makes it easier for everyone to better learn the material.

For this volume, covering what is often called Circuits 1, or Circuits 101, or Fundamental of Circuits, DC circuits is where we establish the foundational concepts of circuits. This textbook covers much of the same topics as we have in our Circuits 101 tutorial series and reviewing both this textbook and the Circuits 101 tutorials will provide two different methods of teaching and it is highly recommended to use both as resources.  In circuits, before we can move on to anything, we need to learn about voltage, current, and resistance.  Tony then covers electrical safety, basic scientific notation, before jumping into how to solve basic circuits with series and parallel circuits.  After learning about more advanced circuit analysis methods like Kirchhoff, this volume delves into electrical instrumentation signals, DC network analysis, and then batteries and power systems.  He then jumps into those topics that bridge the gap between electrical engineering and physics with discussions on batteries and power systems, conductors and insulators, capacitors, inductors, and both magnetism and electromagnetism.  At this point, he gives us a rest before we jump into the next volume where we learn about AC circuits.

We hope you find these volumes enlightening and helpful and if there are any questions, typos, or image issues, please let us know immediately so we can resolve them.

As an open and collaboratively developed text, this book is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Design Science License for more details.

##### Lessons In Electric Circuits copyright (C) 2000-2020 Tony R. Kuphaldt, under the terms and conditions of theCC BY License.

See the Design Science License (Appendix 3) for details regarding copying and distribution.

Revised November 06, 2021

#### Copyright (C) 2000-2020, Tony R. Kuphaldt

These books and all related files are published under the terms and conditions of the Design Science License. These terms and conditions allow for free copying, distribution, and/or modification of this document by the general public.