"Electric Circuits" is the second volume in the series Fundamentals of Electrical and Electronic Technology. In the same spirit as the previous volume, the fundamental elements of the electrical circuit are considered, starting with series and parallel connections, through to the generalized Ohm's law of two-terminal components and a description of the behavior of voltage and current sources, including an analysis of energy aspects. This is a basic course, suitable for students as well as for workers who have undertaken a retraining program. Topics are developed in detail and rigorously, with clear and straightforward exposition. "Let's Try Together" sections provide materials and examples for concrete verification of theoretical aspects. FUNDAMENTALS OF ELECTRICAL AND ELECTRONIC TECHNOLOGIES Vol. 1 - Ohm's Law Vol. 2 - Electric Circuits Vol. 3 - Kirchhoff, Millman, Thévenin, Norton SANDRO RONCA After studying Physics at the University of Padua, he devoted himself to teaching Electrical and Electronic Technologies and Computer Science at Technical and Technological Institutes, taking careful care of the didactic aspects of the subject. He has delved into the study of computer networks and designed, at the request of Industrial Associations, courses for System Analysts and Computer Security Officers.