Introduction to Electric Circuits, 9th edition, International Adaptation is revised and updated for a one- to -three term course in electric circuits or linear circuit analysis. The book endeavors to support students encountering electric circuits for the first time and equips them to solve realistic problems involving these circuits. It features numerous design examples, challenging design problems, and the "How Can We Check" feature to emphasize its practical approach to design. This International Adaptation features revised design examples and problem sets, making them even more effective, useful, and up-to-date. This edition continues the expanded use of problem-solving software such as PSpice and MATLAB.