Electromagnetic Theory and Transmission Lines Pdf Notes – EMTL Notes | Free Lecture Notes download


Here you can download the free lecture Notes of Electromagnetic Theory and Transmission Lines Pdf Notes – EMTL Notes Pdf materials with multiple files links to download. The Electromagnetic Theory and Transmission Lines Notes Pdf – EMTL Pdf Notes book starts with the topics covering Coulomb’s Law, Ampere’s circuital law & applications,  transformer emf &inconsistency of Ampere’s law, Wave equations for conducting & perfect dielectric media, for perfect conductors and perfect dielectrics, etc.

Electromagnetic Theory and Transmission Lines Pdf Notes – EMTL Notes Pdf

According to new syllabus (R13)

Unit 1

Link – EMTL Unit 1

Unit 2

Link – EMTL Unit 2

Unit 3

Link – EMTL Unit 3

Unit 4

Link – EMTL Unit 4

Unit 5

Link – EMTL Unit 5

Electromagnetic Theory and Transmission Lines Notes Pdf – EMTL Pdf Notes

According to Old syllabus Lecturer Notes

Unit 5

Link – EMTL Unit 5

Unit 6

Link – EMTL Unit 6

Unit 7

Link – EMTL Unit 7


  • UNIT-I : Static Electric fields
    In this chapter we will discuss on the followings:
    Coulomb’s Law
    Electric Field & Electric Flux Density
    Gauss’s Law with Application
    Electrostatic Potential, Equipotential Surfaces
    Boundary Conditions for Static Electric Fields
    Capacitance and Capacitors
    Electrostatic Energy
    Laplace’s and Poisson’s Equations
    Uniqueness of Electrostatic Solutions
    Method of Images
    Solution of Boundary Value Problems in Different Coordinate Systems.


    law, Ampere’s circuital law & applications
    Magnetic flux density
    Maxwell’s equations
    Magnetic potential(vector & scalar)
    Forces due to magnetic fields & Ampere’s force law
    Inductance & magnetic energy


  • UNIT III :- Maxwell’s equations (Time varying fields)
    Faraday’s law, transformer emf &inconsistency of ampere’s law
    Displacement current density
    Maxwell’s equations in final form
    Maxwell’s equations in word form
    Boundary conditions: Dielectric to Dielectric& Dielectric to conductor


    Wave equations for conducting & perfect dielectric media
    Uniform plane waves & relations b/w E & H and sinusoidal variations
    Wave propagation: In lossless and conducting media
    Wave propagation: In good conductors and good dielectrics


  • UNIT-V : EM Waves characteristics
    Plane waves: Refraction & reflection
    Normal and oblique incidences: for prefect conductors and perfect dielectrics
    Brewster angle, critical angle and total internal reflection
    Surface impedance, pointing vector & pointing theorem
    Power loss in plane conductors, problems

Note :- These notes are according to the r09 Syllabus book of JNTUH.In R13 ,8-units of R09 syllabus are combined into 5-units in r13 syllabus.Click here to check all the JNTU Syllabus books 

Frequently Asked Questions

Q1: What is coulomb’s law?

A1: Coulomb’s Law states that the force between two point charges Q1 and Q2 is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Q2: What is Gauss law?

A2: The electric flux passing through any closed surface is equal to the total charge enclosed by that surface.

Condition for Gauss law

  • Surface may be irregular but should be sufficiently large so as to enclose the entire surface
  • The surface must be enclosed
  • At each point of the surface D (total charge enclosed by the surface) is either normal or tangential to the surface
  • D is constant over the surface at which it is normal

Q3: What is equi potential surface?

A3: An imaginary surface in an electrical field of a given charge distribution in which all the point on the surface are at the same electric potential.

Q4: What are the properties of dielectric material?

A4: Properties of dielectric material are,

  • the dielectrics do not contain any free charges but contain bound charges
  • The electric field outside and inside the dielectrics gets modified due to the induced electric dipoles
  • Due to the polarization, the dielectrics can store the energy
  • Due to the polarization the flow density of the dielectrics increased by the amount of equivalent to polarization.

Q5: What is boundary conditions and its types?

A5: The conditions existing at the boundary of the two medium when field passes from one medium to other is called boundary conditions. Depending upon the nature of the medium, it can be classified into three types

  • Boundary between dielectric and dielectric
  • Boundary between conductor and dielectric
  • Boundary between conductor and free space

To determine the boundary conditions, maxwell’s equation needs to be used.

Q6: What is the difference between electric and magnetic field?


Basis For Comparison Electric Field Magnetic Field
Definition Force around the electrical charge particle. The region around the magnetic where poles exhibits a force of attraction or repulsion.
Unit Volt/meter or Newton/coulomb Tesla, (Newton × Second) /(Coulomb × Meter)
Symbol E B
Measuring Instrument Magnetometer Electrometer
Pole Mono pole Dipole
Electromagnetic Field It is perpendicular to the magnetic field. It is perpendicular to the electric field.
Field Vector Vector
Field Line Induces on a positive charge and terminate on a negative charge Generate at north pole and terminate at the south pole.
Loop Electric field lines do not form a closed loop. Magnetic line forms a closed loop.
Type of charge Negative or positive charge. North or south pole.
Force Repulsion force on like charges and attraction force on unlike charges. Repulsion force on like poles and attraction force on unlike poles.
Dimension Exist in two dimensions Remain in three dimensions
Work Field can do work (the speed and direction of particles changes) Magnetic field cannot do work (speed of particles remain constant)

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  1. emtl notes not download because password wrong

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