The aim of this book is to give a complete overview of the classical electromagnetic theory together with detailed insight in modern numerical methods for analysis of the problems in electromagnetics. Classical electromagnetic theory was developed in the 19th century but due to a wide range of applications from electrical apparatus such as motors or heaters to telecommunications, this subject is still very interesting. This book explains basic postulates and laws of the theory and its specialization to static and time-dependent problems. Special attention is given to utilization of computers in application of the modern numerical methods to solution of electromagnetic field problems.