ECE 401 - Quasi-Static Electric and Magnetic Fields

Description:  Credit 3U/4G. Static electric and magnetic fields.  Material description, boundary value problems.  Field energy, its conversion and scaling laws.  Quasi-static fields, field diffusion, eddy currents, energy losses.

Prerequisite:  ECE 322

Textbooks:  "Electromagnetic Concepts and Applications," S.V. Marshal, R.E. DuBroff, G.G. Skitek, Prentice Hall, N.J., Fourth Edition.


  • Vector calculus (gradient, divergence, circulation, Green's theorems, determination of fields from sources) 
  • Electrostatic field in vacuum, potential and its properties, multi-pole expansion, dipoles, 

  • charges at interfaces and double layer.
  • Electrostatic fields in material media, boundary value problems, Green's function and 

  •     reciprocity.
  • Electrostatic energy, capacitance, scalling laws for electrostatic energy, forces, actuation, and 

  • electrostatic energy conversion.
  • Magnetostatic fields in vacuum, magnetic scalar and vector potentials, multi-pole expansion, 

  • magneticdipoles.
  • Magnetostatic fields in material media, boundary value problems, magnetic circuits, magnatic 

  • coupling and  reciprocity.
  • Magnetostatic energy, inductance, scaling laws, magnetic forces, actuation and energy conversion. 
  • Maxwell's equations and quasi-static electro-magnetic fields, electromagnetic induction and 

  • transformers.
  • Diffusion of quasi-static fields into conducting medium, boundary value problems, eddy currents and proximity effects.