This book covers Direct Current (DC) circuit theory and is broken up into three modules.
Module 1 covers the basics for circuits that include DC sources (voltage or current) and resistors. Even though Module 1 is not very difficult, it forms the foundation for more complicated topics in Module 2 and 3 so it is important to have a firm grasp of all Module 1 topics before moving on. Module 2 covers more difficult problem solving techniques for circuits that include only DC sources and resistors. Module 3 introduces capacitors and inductors. These non-linear reactive components are analyzed in the transient and steady state regions in circuits with DC sources in Module 3. There are two follow-on eBooks in this 3-part series. They are AC Circuits (published in 2017) and Electromechanical Systems.
The circuits in this book are created in a user friendly circuit drawing and simulation tool called Multisim. Creating new circuits and simulating them to verify your calculations are correct is a good way to hone your skills. While it is a luxury to have a program like Multisim that you can use to check your answers, a word of caution is in order. Sometimes people will become so dependent on Multisim that they have no confidence that they can get the correct answer without it. Additionally, learning to solve the circuit problems helps prepare you for the variety of different problems you will solve in the future. By learning how to solve new types of problems you become a better problem solver, which is what the world desperately needs. Engineers that have become adept at solving complicated problems in many different areas are desperately needed to help solve the challenges we face. So focus on learning to become a better problem solver instead of becoming a master in simulating circuits in Multisim.
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