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SYLLABUS

UNIT-I

Electrostatics Electrostatic fields – Coulomb’s law – Electric Field Intensity (EFI) due to line, surface and volume charges – Work done in moving a point charge in electrostatic field – Electric potential due to point charges, Line charges and volume charges – Potential gradient – Gauss’s Law – Application of Gauss’s law – Maxwell’s first law – Numerical problems. Laplace’s equation and Poisson’s equations – Solution of Laplace’s equation in one variable. Electric dipole – Dipole moment – Potential and EFI due to electric dipole – Torque on an electric dipole in an electric field – Numerical problems.

UNIT-II

Conductors and Dielectrics Behaviour of conductors in an electric field – Conductors and insulators – Electric field inside a dielectric material – Polarization – Dielectric conductors and Dielectric boundary conditions – Capacitance – Capacitance of parallel plate, spherical and co-axial capacitors – Energy stored and energy density in a static electric field – Current density – Conduction and convection current densities – Ohm’s law in point form – Equation of Continuity – Numerical problems.

UNIT-III

Magneto Statics Static magnetic fields – Biot-Savart law – Oerstead’s experiment – Magnetic Field Intensity (MFI) due to a straight, circular and solenoid current carrying wire – Maxwell’s second equation. Ampere’s circuital law and its applications viz., MFI due to an infinite sheet of current and a long current carrying filament – Point form of Ampere’s circuital law – Maxwell’s third equation – Numerical problems. Magnetic force – Lorentz force equation – Force on current element in a magnetic field – Force on a straight and long current carrying conductor in a magnetic field – Force between two straight and parallel current carrying conductors – Magnetic dipole and dipole moment – A differential current loop as a magnetic dipole – Torque on a current loop placed in a magnetic filed – Numerical problems.

UNIT-IV

Magnetic Potential Scalar magnetic potential and vector magnetic potential and its properties – Vector magnetic potential due to simple configuration – Vector Poisson’s equations. Self and mutual inductances – Neumann’s formulae – Determination of self inductance of a Solenoid and Toroid and mutual inductance between a straight, long wire and a square loop wire in the same plane – Energy stored and intensity in a magnetic field – Numerical problems.

UNIT-V

Time Varying Fields Faraday’s law of electromagnetic induction – It’s integral and point forms – Maxwell’s fourth equation. Statically and dynamically induced E.M.F’s – Simple problems – Modified Maxwell’s equations for time varying fields – Displacement current. Wave equations – Uniform plane wave motion in free space, Conductors and dielectrics – Velocity, Wave length, Intrinsic impedance and skin depth – Poynting theorem – Poynting vector and its significance