The study and application of electromagnetism, electricity and electronics is under the scope of a field of engineering called electrical engineering. It has a number of significant subfields such as electronic engineering, control engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, etc. It has applications in the fields of hardware engineering, microwave engineering, nanotechnology, mechatronics and electrochemistry, besides others. Some of the most important innovations of electrical science in history are the development of the telegraph, telephone and electrical power generation and distribution. This textbook is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the field of electrical science. Most of the topics introduced herein cover new techniques and applications of electrical science in a comprehensive manner. For all those who are interested in this discipline, this book can prove to be an essential guide.