Since the time Maxwell first presented a unified theory of Electricity and Magnetism, the field of Electromagnetism has seen numerous advancements. But the fundamentals have remained more or less the same throughout this period. As our search for more advanced communication technology intensifies, the relevance of this field of engineering is only growing day by day. So it is very important for a student of Electrical or Communications engineering or a physics enthusiast to be familiar with the fundamentals of this subject.