Introduction of Vector AnalysisElectromagnetics is the branch of physics or electrical engineering in which electric and magnetic phenomena are studied. The basic knowledge for analyzing the performance of any electrical network is the knowledge of circuit theory. However, the approach of circuit theory is a simplified approximation of a more exact field theory. Field theory is more difficult to comprehend than circuit theory because of the larger number of variables involved. For most electromagnetic field problems, there are three space variables and thus, the solutions become complex.
This can be overcome by the use of vector analysis. So, knowledge of vector analysis is an essential pre-requisite for the study of electromagnetic field theory. The use of vector analysis in the study of electromagnetic field theory results in less time for arriving at solutions.