Electromagnetics

Electromagnetics

Objectives

On successful completion of this module the learner will be able to: • calculate the internal electric interaction force into a discrete distribution of charges using Coulomb’s law, • calculate the electric field produced by discrete or continuous charge distributions, • calculates the electric field flux through a surface and to use Gauss’s law to find the electric field due to continuous charge distributions with high symmetry (e.g., charged line, disk, sphere), • calculates the electric potential and potential energy at a point of a field produced by a system of point charges or by highly symmetric continuous charged bodies (e.g., line, disk, sphere), • calculates capacity and electric energy of a charged conductor or capacitor of symmetric shape (plane, spherical, e.t.c.) and the variation brought about in these quantities by the insertion of dielectric materials, • calculate Lorentz force on a charged particle moving into a uniform magnetic field as well as the force and the mechanical torque developed on a current carrying loop into a uniform magnetic field, • use Biot-Savart and Ampère’s laws to find the magnetic field produced by current carrying circuits with specific symmetric shapes (line, loop, solenoid, e.t.c.), • use Faraday’s law to calculate the electric field and EMF induced on closed circuits of various shapes due to the variation of the magnetic flux through them, • calculates the EMF induced on a ac current generator and the current induced on an electric motor, • estimates the self-inductance of a circuit and the mutual inductance between neighboring circuits and finds the amplitude and frequency of current oscillations in RLC circuits.

Prerequisites

not required.

Syllabus

• Electric fields • Gauss’s law • Electric potential • Capacitance and dielectrics • Magnetic fields • Sources of the magnetic field • Faraday’s law • Inductance