Circuit theory is one of the most important tools of the electrical engineer, and it can be derived with suitable approximations from Maxwell's equations. Despite this, university courses treat electromagnetism and circuit theory as two separate subjects and at advanced level, students can lack a basic understanding of the classical electromagnetism applied in the context of electric circuits to fully appreciate and apply circuit theory and understand its limitations. Here the authors build on their graduate teaching experiences and lectures to treat these topics as a single subject and derive and present the important results from circuit analyses, such as Kirchhoff's laws and Ohm's law, using the ideas of the classical electromagnetism.
N R Sree Harsha is an electrical engineer and a physics enthusiast. His research interests include classical electromagnetism and the theory of relativity and he was head of the Electrical Systems for the `Chimera' Formula-Hybrid Project.
Anupama Prakash is an associate professor at the Department of Electrical and Electronics Engineering, RV College of Engineering, Bangalore, India.
Dwarkadas Pralhaddas Kothari is an educationist and professor who is currently the Director Research at MVSR Engineering College. As recognition of his contributions to engineering education, he was honoured as an IEEE Fellow.