11EE206 ELECTROMAGNETIC FIELDS

Credits 3:1:0

Course Objective:

• To understand the concepts of coordinate systems.

• To realize the electromagnetic fields, charges and currents.

• To calculate electromagnetic field distribution.

• To impart knowledge on vector fields - electrostatic and magneto static fields, electro-

dynamics and electromagnetic waves.

Unit I

General Principles: Review of vector algebra-Coordinate systems-Rectangular, Cylindrical and

Spherical Coordinate Systems- Coordinate transformation-Differential Line, Surface and

Volume Elements-Line, Surface and Volume Integrals- Gradient, Divergence and Curl

Operators- Divergence Theorem- Stokes’ Theorem.

Unit II

Electrostatic Fields: Field concept – Charge Distributions – Coulomb’s Law –Electric Field

Intensity- Determination of Electric Field due to Discrete, Line, Surface and Volume Charges-

Electric Potential- Relationship between Electric Field Intensity and Electric Potential– Potential

due to Electrical Dipole-Potential due to an Infinite Uniformly Charged Line-Electric Flux and

Flux Density- Gauss’ Law- Relation Between Electric Flux and Electric Field Intensity-

Electrostatic Energy- Laplace’s and Poisson’s Equations – Dielectrics –Capacitance-Boundary

Conditions at the Interface of Two Dielectrics.

Unit III

Magneto Static Fields: Current density – Magnetic Flux –Magnetic Flux Density- Magnetic

Field Intensity –Relationship between Magnetic Field Intensity and Magnetic Flux density- Biot-

Savart Law –Determination of Magnetic Field due to Infinitely Long Straight Conductor,

Circular Current Loop and Rectangular Current Loop- Ampere’s Law – Determination of

Magnetic Field due to a Co-axial Cable using Ampere’s Law- Force and Torque in Magnetic

Field- Boundary Conditions at the Interface of Two Magnetic Materials-Self and Mutual

Inductances-Inductance of a Solenoid and a Toroid.

Unit IV

Electromagnetic fields: Displacement current – Eddy current -Faraday’s Law – Lenz’s Law –

Transformer and Motional emfs, Maxwell’s Equations.

Unit V

Electromagnetic Waves: Generation – Propagation of Waves in Dielectrics – Conductors and

Transmission lines –Skin effect-Power and the Poynting Vector.

Course Outcome:

At the end of the course, student would be able to:

• Develop analog and digital electronic system that takes into account propagation and

radiation effects.

• Analyze and understand advanced electromagnetic field problems that arise in various

branches of engineering.

• Design various electromagnetic based equipments.

Text Books

1 Joseph. A. Edminister, “Theory and Problems of Electro Magnetics”, 2nd Edition,

Schaum’s Outline Series, Tata Mc Graw- Hill Publishing Company Limited, New Delhi,

2005.

2 William H.Hayt Jr., John A.Buck, “Engineering Electro Magnetics”, Tata McGraw- Hill

Publishing Company Limited, New Delhi, 3

rd

Edition, 2007.

Reference Books:

1. Matthew N.O. Sadiku, “Elements of Electromagnetics’, Oxford University Press,

London, 3

rd

Edition 2005.

2. Gangadhar, K.A., “Field Theory”, Khanna Publishers Limited, New Delhi, 15

th

Edition,

Third Reprint 2004.

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