FIELD THEORY

Coulombs Law and Electric Field Intensity : Experimental law of Coulomb, Electric field intensity, Field due to continuous volume charge distribution, Field of a line charge. Electric Flux Density, Gauss Law and Divergence : Electric flux density, Gauss law, Divergence, Maxwells first equation (Electrostatics), Vector operator Ñ and Divergence theorem. Energy and Potential : Energy expended in moving a point charge in an electric field, The line integral, Definition of potential difference and potential, The potential field of a point charge and a system of charges, Potential gradient, Energy density in an electrostatic field. Conductors, Dielectric and Capacitance : Current and current density, Continuity of current, Metallic conductors, Conductor properties and boundary conditions, Boundary conditions for perfect dielectrics, Capacitance and examples. Poissons and Laplaces Equations : Derivations of Poissons and Laplaces equations, Uniqueness theorem, Examples of the solutions of Laplaces and Poissons equations. The Steady Magnetic Field : Biot-Savart law, Amperes circuital law, Curl, Stokes theorem, Magnetic flux and flux density, Scalar and Vector magnetic potentials. Magnetic Forces : Force on a moving charge and differential current element, Force between differential current elements, Force and torque on a closed circuit. Magnetic Materials and Inductance : Magnetization and permeability, Magnetic boundary conditions, Magnetic circuit, Potential energy and forces on magnetic materials, Inductance and mutual inductance. Time Varying Fields and Maxwells Equations : Faradays law, Displacement current, Maxwells equation in point and integral form, Retarded potentials. Uniform Plane Wave : Wave propagation in free space and dielectrics, Poyntings theorem and wave power, Propagation in good conductors - (Skin effect). Plane Waves at Boundaries and in Dispersive Media : Reflection of uniform plane waves at normal incidence, SWR, Plane wave propagation in general directions.