Electromagnetic Theory
Teacher
Meena Kumari Sahu
Category
Core Courses
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Code(Credit) : CUTM1495(3-2-1)
Course Objectives
- To provide the basic skills required to understand, develop, and design various engineering applications involving electromagnetic fields.
- To lay the foundations of electromagnetism and its practice in modern communications such as wireless, guided wave principles such as fiber optics and electronic electromagnetic structures.
- To understand the transverse nature of light.
Learning Outcomes
| COs | Course outcomes | Mapping COs with POs (High-3, Medium-2, Low-1) |
| CO2 | Apply vector calculus to static electric-magnetic fields in different engineering situations. | PO1-3, PO2-2 |
| CO5 | Analyze Maxwell’s equation in different forms. | PO2-2, PO5-3, PO9-1 |
| CO4 | Examine the phenomena of wave propagation in different media and its interfaces and in applications of microwave engineering. | PO1-3, PO7-1 |
Course Outlines
Module-I
Maxwell Equations
Review of Maxwell’s equations. Displacement Current. Vector and Scalar Potentials. Gauge Transformations: Lorentz and Coulomb Gauge. Boundary Conditions at Interface between Different Media. Wave Equations. Plane Waves in Dielectric Media. Poynting Theorem and Poynting Vector. Electromagnetic (EM) Energy Density. Physical Concept of Electromagnetic Field Energy Density, Momentum Density and Angular Momentum Density.
Practice-1 To study the reflection, refraction of microwaves
Module-II
Electromagnetic Waves Propagation in Unbounded Media
Plane Electromagnetic waves through vacuum and an isotropic dielectric medium, transverse nature of plane Electromagnetic waves, refractive index and dielectric constant, wave impedance. Propagation through conducting media, relaxation time, skin depth. Wave propagation through dilute plasma, electrical conductivity of ionized gases, plasma frequency, refractive index, skin depth, application to propagation through ionosphere.
Practice-2 To determine the refractive index of liquid by total internal reflection using Wollaston’s air-film
Module-III
Electromagnetic Waves in Bounded Media
Boundary conditions at a plane interface between two media. Reflection & Refraction of plane waves at plane interface between two dielectric media-Laws of Reflection & Refraction. Fresnel's Formulae for perpendicular & parallel polarization cases, Brewster's law. Reflection & Transmission coefficients. Total internal reflection.
Practice-3 To determine the refractive Index of (1) glass and (2) a liquid by total internal reflection .
practice-4 To study the polarization of light by reflection and determine the polarizing angle for air-glass interface
Module-IV
Electromagnetic Waves in anisotropic media
Propagation of electromagnetic waves in anisotropic Media. Symmetric Nature of Dielectric Tensor. Fresnel’s Formula. Uniaxial and Biaxial Crystals. Light Propagation in Uniaxial Crystal.
Practice-5 To determine the wavelength and velocity of ultrasonic waves in a liquid (Kerosene Oil, Xylene, etc.) by studying the diffraction through ultrasonic grating.
Module-V
Polarization of Electromagnetic waves
Description of Linear, Circular and Elliptical Polarization.Double Refraction. Polarization by Double Refraction. Nicol Prism. Ordinary & extraordinary refractive indices. Production & detection of Plane, Circularly and Elliptically Polarized Light. Phase Retardation Plates: Quarter-Wave and Half-Wave Plates.
practice-6 To verify the law of Malus for plane polarized light.
Practice-7 To analyze elliptically polarized Light by using a Babinet’s compensator.
Module-VI
Rotatory Polarization
Optical Rotation. Biot’s Laws for Rotatory Polarization. Fresnel’s Theory of optical rotation. Calculation of angle of rotation. Experimental verification of Fresnel’s theory. Specific rotation. Laurent’s half-shade polarimeter.
Practice-8 To study Polarization and double slit interference in microwaves.
Practice-9 To determine the specific rotation of sugar solution using Polarimeter.
Module-VII
Optical Fibres
Numerical Aperture. Step and Graded Indices (Definitions Only).
Single and Multiple Mode Fibres (Concept and Definition Only).
Practice-10 To verify the Stefan`s law of radiation and to determine Stefan’s constant.
Practice-11 To determine the Boltzmann constant using V-I characteristics of PN junction diode.
Practice-12 To study dependence of radiation on angle for a simple Dipole antenna.
Text Books:
Introduction to Electrodynamics, D.J. Griffiths, 3rd Ed., 1998, Benjamin Cummings.
Reference Books:
1. Electrodynamics by Satya Prakash
2. A textbook of Optics ,BrijlalSubramanyam
3. Elements of Electromagnetics, M.N.O. Sadiku, 2001, Oxford University Press.
4. Introduction to Electromagnetic Theory, T.L. Chow, 2006, Jones & Bartlett Learning
5. Fundamentals of Electromagnetics, M.A.W. Miah, 1982, Tata McGraw Hill
6. Electromagnetic field Theory, R.S. Kshetrimayun, 2012, Cengage Learning
7. Engineering Electromagnetic, Willian H. Hayt, 8th Edition, 2012, McGraw Hill.
8. Electromagnetic Field Theory for Engineers & Physicists, G. Lehner, 2010, Springer
Session Plan
Session 1
Session 3
Assignment/Flipped Class-1
Scalar potential and Vector potential
https://www.slideshare.net/abhinaypotlabathini/ppt19-magneticpotential
Session 4
Session 5
Boundary Conditions at Interface between Different Media
Session 6
Wave Equations. Plane Waves in Dielectric Media
https://www.slideshare.net/saiteja28941/5-slides-47689187
Session 7
Session 8
| Electromagnetic (EM) Energy Density. Physical Concept of Electromagnetic Field Energy Density |
Session 9
| Assignment/Flipped Class-2
Momentum Density and Angular Momentum Density https://www.slideshare.net/physicistshubhammaurya/physics-2961169
|
Session 10
| Practice-1(2hrs)
To study of reflection and refraction of microwaves
|
Session 11
| Plane EM waves through vacuum, transverse nature of plane EM waves, refractive index and dielectric constant, wave impedance
https://slideplayer.com/slide/8658875/
|
Session 12
| Plane EM waves through isotropic dielectric medium,transverse nature of plane EM waves, refractive index and dielectric constant, wave impedance
https://www.slideshare.net/niranjankumar47/electromagnetic-waves-65970456 |
Session 13
| Assignment/Flipped Class-3
Propagation of electromagnetic waves through conducting media, relaxation time, skin depth https://www.slideshare.net/suganthithangaraj1/electro-magnetic-waves-57444723 |
Session 14
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Session 15
| Practice-2(2hrs)
To determine the refractive index of liquid by total internal reflection using Wollaston’s air-film. |
Session 16
| Assignment/flipped class-4
Boundary conditions at a plane interface between two media https://slideplayer.com/slide/4661886/
|
Session 17
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Session 18
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Session 19
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Session 20
| Brewster's law. Reflection & Transmission coefficients.
https://www.slideshare.net/salmansmd/brewster-law
|
Session 21
Session 22
| Practice-3(2hrs)
To determine the refractive Index of (1) glass and (2) a liquid by total internal reflection |
Session 23
Practice-4(2hrs)
To study the polarization of light by reflection and determine the polarizing angle for air-glass interface.
Session 24
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Session 25
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Session 26
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Session 27
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Session 28
Session 29
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Session 31
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Session 32
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Session 33
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Session 35
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Session 36
Session 37
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Session 38
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Session 40
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Session 41
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Session 42
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Session 43
Session 44
Session 45
Session 46
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Session 47
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Session 48
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Session 50
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Session 51
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Session 52
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Session 53
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Session 54
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