# Electromagnetic Theory Pdf Notes – EMT Notes | Free Lecture Notes download

Here you can download the free lecture Notes of Electromagnetic Theory Pdf Notes – EMT Pdf Notes materials with multiple file links to download. Electromagnetic Theory Notes Pdf – EMT Notes Pdf book starts with the topics covering Sources&effects of electromagnetic field,electromagnetic, columbs law, Magnetostatics, Electrodynamic field, Electromagnetic waves, etc.

## Electromagnetic Theory Pdf Notes – EMT Pdf Notes

Unit 1

Unit  2

Unit  3

Unit  4

Unit 5

Complete Notes

Unit  1

Unit 2

Unit  3

Unit  4

Unit  5

#### Link:Unit 5 Notes

Note :- These notes are according to the R09 Syllabus book of JNTU.In R13 and R15,8-units of R09 syllabus are combined into 5-units in R13 and R15 syllabus. If you have any doubts please refer to the JNTU Syllabus Book.

### Topics Covered in Electromagnetic Theory Notes Pdf – EMT Notes Pdf

Unit-1:

Sources&effects of electromagnetic field,electromagnetic,field,types of field,magnetic field,electric field,engineering electromagnetics,scalar,vector,scalar field,vector field,scalar(or)dot product,vector(or)cross product,co-ordinate system,cartesian(or)rectungalar co-ordinate system,base vector,cylinder co-ordinate system.

Unit-2:

Electrostatics,columbs law,vector form of coulombs law,electric field intensity,electric field due to point charges,electric field due to continuos charges,line charge,surface charge,volume charge,field due to line charge,surface charge(or)sheet charge,electric field intensity due to visuvilization point distrubution,gauss law,electric potential,equipotential surface,uniform field,non-uniform field,electric field conduction free space &dielectric,conduction current,convection current,dielectric constant and dielecric strength.

Unit-3:

Magnetostatics,relation ship between B and H,surface current,volume current,maxwell equation in magnetic field,maxwell equation for static electromagnetic field,integral form,application of flux density and flux to co-axial cable,minor conductor,magnetic scalar vs vector potential,laplace equation for scalar magnetic potential,vector magnetic potential,poissons equation for magnetic field,inductance,induction of toroid,induction of a co-axial cable,magnetic forces.

Unit-4:

Electrodynamic field,faradays law,lenz law,disadvantage of magnetic circuit,field theory and circuit theory,electric&magnetic circuits,maxwells equation,amper’s circuit law,faradays law,guass law for electric field,guass law for magnetic field,divergence theorm,maxwell’s equation for free space,integral form,maxwell’s equation for good conductor,maxwells equation for harmonically varying field,displacement current,forces and energy in quasi stationary electro magnetic field,boundary conditions for time varying field.

Unit-5:

Electromagnetic waves,attenuation constant,phase constant,propogation constant,intrinsic impedence,EM wave in any general medium,em wave in free space, em wave in perfect dielectric,velocity,EM waves in lossy dielectrics,EM waves in good conductor,skin depth (or) depth of penetration,effect,poynting vector and poynting therom,waves are means of transeffering energy(or)information from source to destination.it is also a function of both time and space.

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Q1: What is electromagnetic field?

A1: Branch of physics that deals with electric as well as magnetic phenomena. Both the fields are closely related to each other. A field is a region in which a corresponding value of some physical function exists at each point. There are two types of field. Magnetic field produced by magnetic effect. Electric field produced due to electric changes. Moving charges produce a current. The current carrying conductor produces a magnetic field. Thus, electric and magnetic field are related to each other. This field is called as electromagnetic field.

Q2: What is scalar and vector field?

A2: A physical quantity which is characterized by its magnitude only is called scalar. (Example: speed, mass, temperature, volume, density, electric charge etc). The distribution of a scalar quantity with a definite position in a space is called scalar field. Eg; the temperature of atmosphere where it has a definite value in the atmosphere but there is no need of direction to specify.

A physical quantity which is characterized by its magnitude and as well as direction is called vector. The corresponding field is called vector field, if a quantity which is specified in a region to define a field is a vector. Example, the gravitational force on a mass in a space. This force has a value at various points in a space and also has a specific direction.

Q3: What is electrostatics?

A3: A branch of electromagnetic dealing with the effect of electric charges at rest position.

Q4: Explain coulomb’s law.

A4: The fundamental of electrostatics is coulomb’s law. It was given by Calomel Charles Coulomb, a french army engineer. It says,

‘The force between the two point charges Q1 and Q2 is given by Q1——Q2

1. acts with the line joining the two point charges
2. directly proportional to the product of the two point charges Q1 and Q2
3. It is inversely proportional to the square of the distance between two point charges

Q5: What is electric field intensity?

A5: The force exerted per unit charge is called electric field intensity. It is denoted by E

E= Total Force (N)/Total charge (c).

• electric field due to point charges
• electric field due to continuous charges