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CODE PHY3120

 
TITLE Electromagnetism

 
LEVEL 03 - Years 2, 3, 4 in Modular Undergraduate Course

 
ECTS CREDITS 6

 
DEPARTMENT Physics

 
DESCRIPTION Prerequisite
PHY1140 and PHY1160

Mathematical background:
Gradient; divergence; curl; Laplacian operator; Divergence Theorem; Stokes' Theorem

Electrostatics:
Coulomb's law; electric field of a charge distribution; Gauss' law; divergence of E

Steady currents - magnetostatics:
Lorentz force; Biot-Savart law; divergence of B; Ampére's law

Time-varying fields:
Faraday's induction law; curl of E; vacuum displacement current; curl of B

Electromagnetic waves in free space:
Maxwell's equations in free space; wave equations for E and B; plane wave solutions for the wave equation; polarization

Electric fields in insulators:
Electric dipole moment; dielectric polarization; dielectrics in non-uniform electric fields; polarization charge density and surface charge density; electric displacement vector D; electric susceptibility

Magnetic fields in matter:
Magnetic dipole moment; magnetisation vector M; magnetic intensity vector H; magnetic susceptibility

Electromagnetic fields in linear, isotropic and homogeneous media:
Maxwell's equations in LIH media; wave equation for LIH media; conducting media; skin depth; E and H vectors in lossy media; complex permittivity and permeability

Electromagnetic field energy:
Energy density in electromagnetic fields; energy flow; Poynting's Theorem; Poynting vector in free space and LIH media

Boundary conditions at the interface between two media for the field vectors E, B, D and H

Applications of the boundary conditions:
Reflection and refraction of plane waves at the interface between dielectric media; Fresnel equations; Brewster angle; reflection and refraction at the surface of a good conductor

Propagation of electromagnetic waves in waveguides:
Parallel wire transmission lines; line equations; characteristic impedance; coaxial cables; rectangular waveguides; TEnm and TMnm propagation modes in rectangular waveguides; cut-off frequency

Radiation theory:
The scalar and vector potentials; ?(r) and A(r); Lorentz Gauge; Maxwell's equations in terms of ?(r) and A(r); antenna theory - solutions for ?(r) and A(r); radiation by time-varying currents - Hertzian dipole; far fields; half-wave antenna; radiation resistance; loop antenna

Recommended Texts:

- I S Grant and W R Philips, Electromagnetism, John Wiley and Sons
- W N Cottingham and D A Greenwood, Electricity and Magnetism, Cambridge University Press
- P Lorrain and D Corson, Electromagnetic Fields and Waves, W H Freeman and Co
- S Ramo, J R Whinery and T vanDuzer, Fields and Waves in Communication Electronics, John Wiley and Sons
- R E DuBroff, S V Marshall and G G Skitek, Electromagnetic Concepts and Applications, Prentice Hall
- D H Staelin, A W Morgenthaler and J A Kong, Electromagnetic Waves, Prentice Hall
- J D Kraus, Electromagnetics, McGraw-Hill
- F W Ulaby, Fundamentals of Applied Electromagnetics, Prentice Hall
- C A Balanis, Advanced Engineering Electromagnetics, John Wiley and Sons
- C J Camilleri, Vector Analysis, Malta University Press

 
STUDY-UNIT TYPE Lecture

 
METHOD OF ASSESSMENT
Assessment Component/s Resit Availability Weighting
Examination (3 Hours) Yes 100%

 
LECTURER/S Charles V. Sammut

 
The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the study-unit description above applies to the academic year 2017/8, if study-unit is available during this academic year, and may be subject to change in subsequent years.
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