Electrodynamics is a fundamental area of physics that spans classical and quantum physics, optics, relativity, and field theory, with wide-ranging practical importance. This text strives to strike a balance between foundational theory and practical applications, including introductions to key quantum mechanical effects. Its detailed presentation enables readers to follow each step clearly. Every chapter is supplemented with both worked examples and unsolved exercises. This thoroughly revised third edition covers all the material required for an undergraduate degree in physics and beyond, serving as a solid foundation for advanced applications and research.