There are several ways to access the PDF version of "Electromagnetic Field Theory" by S.P. Seth for free. Here are a few methods:

The unification of electric and magnetic fields in differential and integral forms.

The search query is one of the most frequented strings in engineering exam preparation forums. But why is this book so revered? Is it legal to download free PDFs? And more importantly, how do you use this text to actually pass your exams (like GATE, IES, or university finals)?

Your future self (working at ISRO, Qualcomm, or the Power Grid) will thank you for understanding the physics, not just collecting files.

Plane electromagnetic waves in different media, including free space and dielectrics.

Elements of Electromagnetic Fields (published by Dhanpat Rai & Co.