# Electromagnetic Fields Anna University Notes – EC2253 EMF Lecture notes, Subject Notes for ECE -4th Semester

**Electromagnetic Fields Anna University Notes – EC2253 EMF notes download**. here we have **Anna University notes for Electromagnetic Fields Subject and content of EC2253 EMF anna university Notes.** download **EC2253 Electromagnetic Fields Anna University Lecture Notes, Subject Notes, and Unit Wise Notes and EC2253 Syllabus.**

**EC2253 ELECTROMAGNETIC FIELDS ANNA UNIVERSITY NOTES – EC2253 EMF NOTES**

Subjects :** Electromagnetic Fields (EMF)**

Subject Code :** EC2253**

Department : **ECE**

Semester :** 4th Sem**

University : **Anna University, Chennai**

**Anna University Electromagnetic Fields Notes – EC2253 EMF Notes download**

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**Content of EC2253 Notes :**

**UNIT I STATIC ELECTRIC FIELDS **

Introduction to Co-ordinate System – Rectangular – Cylindrical and Spherical Co-ordinate System – Introduction to line, Surface and Volume Integrals – Definition of Curl, Divergence and Gradient – Meaning of Stokes theorem and Divergence theorem

Coulomb’s Law in Vector Form – Definition of Electric Field Intensity – Principle of Superposition – Electric Field due to discrete charges – Electric field due to continuous charge distribution – Electric Field due to charges distributed uniformly on an infinite and finite line – Electric Field on the axis of a uniformly charged circular disc – Electric Field due to an infinite uniformly charged sheet.

Electric Scalar Potential – Relationship between potential and electric field – Potential due to infinite uniformly charged line – Potential due to electrical dipole – Electric Flux Density – Gauss Law – Proof of Gauss Law – Applications.

**UNIT II STATIC MAGNETIC FIELD **

The Biot-Savart Law in vector form – Magnetic Field intensity due to a finite and infinite wire carrying a current I – Magnetic field intensity on the axis of a circular and rectangular loop carrying a current I – Ampere’s circuital law and simple applications.

Magnetic flux density – The Lorentz force equation for a moving charge and applications – Force on a wire carrying a current I placed in a magnetic field – Torque on a loop carrying a current I – Magnetic moment – Magnetic Vector Potential.

**UNIT III ELECTRIC AND MAGNETIC FIELDS IN MATERIALS**

Poisson’s and Laplace’s equation – Electric Polarization-Nature of dielectric materials- Definition of Capacitance – Capacitance of various geometries using Laplace’s equation – Electrostatic energy and energy density – Boundary conditions for electric fields – Electric current – Current density – point form of ohm’s law – continuity equation for current.

Definition of Inductance – Inductance of loops and solenoids – Definition of mutual inductance – simple examples. Energy density in magnetic fields – Nature of magnetic materials – magnetization and permeability – magnetic boundary conditions.

**UNIT IV TIME VARYING ELECTRIC AND MAGNETIC FIELDS**

Faraday’s law – Maxwell’s Second Equation in integral form from Faraday’s Law – Equation expressed in point form.

Displacement current – Ampere’s circuital law in integral form – Modified form of Ampere’s circuital law as Maxwell’s first equation in integral form – Equation expressed in point form. Maxwell’s four equations in integral form and differential form.

Poynting Vector and the flow of power – Power flow in a co-axial cable – Instantaneous Average and Complex Poynting Vector.

**UNIT V ELECTROMAGNETIC WAVES**

Derivation of Wave Equation – Uniform Plane Waves – Maxwell’s equation in Phasor form – Wave equation in Phasor form – Plane waves in free space and in a homogenous material.

Wave equation for a conducting medium – Plane waves in lossy dielectrics – Propagation in good conductors – Skin effect.

Linear, Elliptical and circular polarization – Reflection of Plane Wave from a conductor – normal incidence – Reflection of Plane Waves by a perfect dielectric – normal and oblique incidence. Dependence on Polarization. Brewster angle.

**TEXTBOOKS**

- W H.Hayt & J A Buck : “Engineering Electromagnetics” TATA McGraw-Hill, 7
^{th} Edition 2007 (Unit I,II,III ).
- E.C. Jordan & K.G. Balmain “Electromagnetic Waves and Radiating Systems.” Pearson Education/PHI 4
^{nd} edition 2006. (Unit IV, V).

**REFERENCES**

1. Matthew N.O.Sadiku: “Elements of Engineering Electromagnetics” Oxford University Press, 4th edition, 2007

2. Narayana Rao, N : “Elements of Engineering Electromagnetics” 6^{th} edition, Pearson Education, New Delhi, 2006.

3. Ramo, Whinnery and Van Duzer: “Fields and Waves in Communications Electronics” John Wiley & Sons ,3^{rd} edition 2003.

4. David K.Cheng: “Field and Wave Electromagnetics – Second Edition-Pearson Edition, 2004.

5. G.S.N. Raju, Electromagnetic Field Theory & Transmission Lines, Pearson Education, 2006

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