WITH EFFECT FROM THE ACADEMIC YEAR 2011 - 2012

EC 202

ELECTROMAGNETIC THEORY

Instruction                                                 4              Periods per week

Duration of University Examination    3              Hours

University Examination                          75            Marks

Sessional                                                   25            Marks

UNIT-I

Cartesian, Cylindrical and spherical coordinate systems - review of vector analysis - Coulomb’s Law. Electric Field Intensity. Electric field due to different charge distributions. Line of charge, sheet of charge and volume charge distributions. Electric flux, flux density, Gauss’s Law and application. Divergence theorem.

UNIT-II

Energy and potential, Potential field of system of charges, potential gradient. Energy density, Boundary conditions in static electric field, Capacitance of two-wire line, Continuity equation, current density, Poisson’s equation, Laplace equation, Uniqueness theorem, Applications of simple practical cases.

UNIT-III

Steady magnetic field, Biot-Savart’s law, Ampere’s law, Stroke’s theorem, Magnetic scalar and vector potentials. Magnetic boundary conditions, Magnetomotive force, Permeability, self and mutual inductances, Evaluation of inductance of solenoid, toroid, coaxial cable, two-wire transmission line.

UNIT-IV

Time varying fields, Maxwells equations, Boundary conditions in Em field. Em wave equations in free space and conductors. Sinusoidal variations. Uniform plane wave, wave motion in free space. Wave motion in perfect dielectrics, lossy dielectrics and conductors. Polrization - linear, elliptical and circular polarizations.

UNIT-V

Energy theorem and Poynting vector, Instantaneous, average and complex Poynting vector. Reflection of plane waves by a perfect conductor, normal

and oblique incidence. Reflection of plane waves by a perfect dielectric, normal and oblique incidence. Reflection coefficient. Transmission coefficient, power and energy calculations.

Suggested Reading :

1. 1.Jordan, E.C., Balmain, K.G., Electromagnetic Waves and Radiating Systems, 2^nd edition, PHI, 2009.

1. 2.Hayt., W.H., Engineering Electromagnetics, McGraw Hill, 7^th edition, 2006.

1. 3.Nannapaneni Narayana Rao, Elements of Engineering Electromagnetics, 6^th edition, 2009.

1. 4.Matthew N.O. Sadiku, Principles of Electromagnetics, 4^th edition, Oxford Univ. Press, 2009.

1. 5.John Krauss and Daniel A. Fleisch, Electromagnetics, 5^th edition, McGraw Hill,