The herein book is nothing else but a collection of definitions, theories and principles that are providing a general image for the students enrolled at undergraduate studies in Electrical Engineering. The main objective of the lecture is to familiarize the students with basic terminology needed for facilitating the understanding of future disciplines they are to attend. My goal was not to be as rigorous as possible in presenting the fundamental notions in respect to physics principles and laws but to allow them to better understand the properties of basic materials employed in electrical engineering fact which will allow the identification and utilization of most suitable materials in the design phase of various electrical devices. I really hope that this book will be as useful as possible for all undergraduate students to be working after graduation in the electrical engineering industry!