This end edition introduces to the characteristic features of electromagnetic phenomena in superconductors, demonstrating how these phenomena not only align with Maxwell’s theory but also expand its scope. By presenting examples of peculiar magnetic behaviors, the book broadens the reader’s understanding of electromagnetism and its implications in superconductivity. The book explores key concepts such as flux pinning, responsible for non-dissipative currents in DC systems and hysteretic irreversibility in AC systems. This irreversibility, akin to friction, arises from the instability in the motion of quantized magnetic flux lines. Additionally, the longitudinal magnetic field effect is examined, highlighting its role in advancing Maxwell’s theory. Through these discussions, readers will gain insights into the dynamics of quantized magnetic flux lines and the critical current density, crucial for the practical application of superconductors. With numerous appendices to support the derivation of complex equations, this book is an essential resource for students and young scientists interested in applied superconductivity, particularly in power applications. It offers a comprehensive introduction to the electromagnetic phenomena in superconductors, from fundamental principles to advanced topics. Graduate students, researchers, and engineers in the electric utility industry will find this book invaluable for its detailed exploration of superconductivity and its applications. Researchers and practitioners in the field of superconductivity, as well as engineers working in the electric utility industry, will benefit from the insights provided in this book. It serves as a critical resource for understanding the electromagnetic phenomena in superconductors and their practical applications, making it a must-read for those seeking to deepen their knowledge in this area.