Title: Slide Presentations for ECE 329, Introduction to Electromagnetic Fields, to supplement
1Slide Presentations for ECE 329,Introduction to
Electromagnetic Fields,to supplement Elements
of Engineering Electromagnetics, Sixth Edition
- by
- Nannapaneni Narayana Rao
- Edward C. Jordan Professor of Electrical and
Computer Engineering - University of Illinois at Urbana-Champaign,
Urbana, Illinois, USA - Distinguished Amrita Professor of Engineering
- Amrita Vishwa Vidyapeetham, Coimbatore, Tamil
Nadu, India
2- 4.1
- Conductors
- and Semiconductors
3- Material Media can be classified as
- (1) Conductors
- and Semiconductors
- (2) Dielectrics
- (3) Magnetic materials magnetic property
- Conductors and Semiconductors
- Conductors are based upon the property of
conduction, the phenomenon of drift of free
electrons in the material with an average drift
velocity proportional to the applied electric
field.
electric property
4In semiconductors, conduction occurs not only by
electrons but also by holes vacancies created
by detachment of electrons due to breaking of
covalent bonds with other atoms. The conduction
current density is given by
Ohms Law at a point
5conductors semiconductors
6Ohms Law
Ohms Law
7 8 9- Conductor in a static electric field
10rS e0E0
rS e0E0
rS e0E0
rS e0E0
rS e0E0
rS e0E0
11 12Write two more equations and solve for the four
unknowns.