Principles Of Electromagnetics

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Principles of Electromagnetics is designed as a text for undergraduate students of electronics and telecommunications engineering. The book contains materials related to static electric field and its behavior in conducting and dielectric medium with boundary conditions, and has wide coverage of topics on energy, potential and capacitance concepts. The text also explains the topics on magnetostatic, magnetic materials and the behavior of magnetic field at the boundary of different mediums. It also handles the theory related to time varying fields and Maxwell's equations that help in understanding the concept of electromagnetic wave and power flow analysis using Poynting theorem. Written in a student-friendly manner, the text includes detailedcoverage of fundamentals of electromagnetic field and simplification techniques using vector analysis, differential and integral calculus, which are essential for proper understanding of the subject. Although mathematics is an integral part of the subject, every care has been taken to see that the objective of this book is not lost in the details of mathematical treatment.

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R.G. KADUSKAR, M.S. in Electronics & Control and M.E. in Electronics & Telecommunication Engineering, is assistant professor in the Department of Electronics and Telecommunication Engineering at Pune Vidyarthi Griha’s College of Engineering & Technology. He teaches courses on Electronic Product Design, Electromagnetic Engineering and Power Electronics. His main areas of interest include VLSI Design, Mathematical Modeling and Simulation. An author of about 10 books, Prof. Kaduskar has also authored Network Fundamentals and Analysis (Wiley India). Table of Contents Table of Contents Preface v 1. Mathematical Approach to Electromagnetic Field 1.1 Introduction 1.2 Scalars and Vectors 1.3 Vector Algebra 1.4 Coordinate Systems 2. Differential and Integral Approach in Electromagnetic Theory 2.1 Differentiation of Scalars 2.2 Differentiation of Vectors 2.3 Integration of Scalars and Vectors 2.4 Laplacian Operation 2.5 Helmholtz’sTheorem 3. Static Electric Field 3.1 Introduction 3.2 Electric Charge or Point Charge 3.3 Electric Field Intensity 3.4 Charge Distribution 3.5 Electric Field Intensity 3.6 Field Lines and its Mathematical Representation 3.7 Gauss’s Law 3.8 Gauss’s Law for Differential Volume Element 4. Steady Electric Current 4.1 Introduction 4.2 Ohm’s Law 4.3 Conduction in Various Materials 4.4 Continuity Relation for Current 5. Energy and Potential 5.1 Introduction 5.2 Scalar Potential 5.3 Positive Work and Negative Work 5.4 Potential Difference and Potential 5.5 Energy Density 6. Static Electric Field in Dielectrics 6.1 Introduction 6.2 Behavior of Conductors under Uniform Electric Field 6.3 Dielectric or Insulating Materials 6.4 Laplace Equation and Their Applications 6.5 Poisson’s Equation 6.6 Uniqueness Theorem 6.7 Laplace’s Equation in Two Dimensions 7. Static Magnetic Field 7.1 Introduction 7.2 Magnetic Force or Ampere’s Force Law 7.3 Biot–Savart Law 7.4 Ampere’s Circuit Law 7.5 Magnetic Induction or Magnetic Flux Density and Magnetic Flux 7.6 Magnetic Vector Potential 8. Magnetic Field and Magnetic Materials 8.1 Introduction 8.2 Magnetization 8.3 Different Types of Magnetic Materials 8.4 Boundary Conditions of Magnetic Field in Two Media 8.5 Energy Stored in a Magnetic Field 8.6 Inductors and Inductance 9. Time-Varying Field and Maxwell��s Equations 9.1 Introduction 9.2 Charged Particles Moving in a Static Magnetic Field 9.3 Faraday’s Experiment and Law 9.4 Capacitor and Displacement Current 9.5 Modified Ampere’s Law 9.6 Maxwell’s Equations 10. Numerical Electromagnetic and Applications 10.1 Introduction 10.2 Variable Separation Method 10.3 Finite Difference Method 10.4 Method of Images 10.5 Moment Method or Method of Moments 10.6 Finite Element Method Appendix I Symbols and Units Appendix II Physical Constants Appendix III Some Useful Material Constants Appendix IV Conversion Factors Appendix V Prefixes and Power of 10 Appendix VI Selected Numerical Constants Appendix VII Trigonometric Identities Appendix VIII Derivatives and Integrals Appendix IX Special Mathematical Equations Appendix X MATLAB Answers Index