Electrical engineering is a core discipline of engineering science that has profoundly influenced technological and industrial progress. Present in a wide range of fields such as energy production, telecommunications, automation and embedded systems, it is based on fundamental principles developed and refined over centuries. This book offers a comprehensive exploration of electrical engineering, structured in three main parts: 1. History and evolution: The first chapters trace the pioneering discoveries of electricity (Chapter 1), the major advances of the 18th and 19th centuries (Chapter 2), and their impact during the Industrial Revolution and electrification (Chapter 3). 2. Theoretical foundations: The basic concepts of electricity (Chapter 4), electrical components (Chapter 5), and the laws governing circuits (Chapter 6) are explained in a clear and rigorous manner.3. Applications and key phenomena: The final chapter covers electromagnetism (Chapter 7), which is essential for energy conversion and transmission, illustrating the link between theory and practice.