JNTUK R19 2-1 EMF Material/Notes PDF Download
Students those who are studying JNTUK R19 EEE Branch, Can Download Unit wise R19 2-1 ELECTRO MAGNETIC FIELDS Material/Notes PDFs below.
JNTUK R19 2-1 EMF Material/Notes PDF Download
Preamble: Electromagnetic field theory is the pre-requisite for most of the subjects in the gamut of electrical engineering. The study of this subject enables students to understand and interpret the phenomenon pertinent to electrical engineering using microscopic quantities such as electric and magnetic field intensities, scalar and vector potentials.
Course Objectives: This course is designed to:
- To study the production of electric field and potentials due to different configurations of static charges.
- To study the properties of conductors and dielectrics, calculate the capacitance of different configurations. Understand the concept of conduction and convection current densities.
- To study the magnetic fields produced by currents in different configurations, application of Ampere’s law and the Maxwell’s second and third equations.
- To study the magnetic force and torque through Lorentz force equation in magnetic field environment like conductors and other current loops.
- To develop the concept of self and mutual inductances and the energy stored.
- To study time varying and Maxwell’s equations in different forms and Maxwell’s fourth equation for the induced EMF
Electrostatics Scalar and vector fields, overview of coordinate system, calculus of scalar and vector fields in Cartesian coordinates – Coulomb’s Law – Electric Field Intensity (EFI) – EFI due to a line and a surface charge, work done in moving a point charge in an electrostatic field, electric potential – properties of potential function – potential gradient, Guass’s law –Laplace’s and Poison’s equations.
Conductors – Dielectrics and Capacitance Electric dipole – dipole moment – potential and EFI due to an electric dipole, Torque on an Electric dipole in an electric field conductors and Insulators – their behaviour in electric field. Polarization, boundary conditions between conductors to dielectric.Capacitance of parallel plates, spherical and coaxial cable, energy stored and energy density in a static electric field, equation of continuity.
Magneto statics and Ampere’s Law Biot-Savart’s law, Magnetic Field Intensity (MFI) – MFI due to a straight current carrying filament, MFI due to circular, square and solenoid current – carrying wire – relation between magnetic flux, magnetic flux density and MFI. Maxwell’s second Equation, div(B)=0, Ampere’s circuital law and its applications viz. MFI due to an infinite sheet of current and a long filament carrying conductor, point form of Ampere’s circuital law, field due to a rectangular loops, Maxwell’s third equation, Curl (H)=J.
Magnetic force, moving charges in a magnetic field – Lorentz force equation, force on a current element in a magnetic field, force on a straight and a long current carrying conductor in a magnetic field, force between two straight long and parallel current carrying conductors, magnetic dipole and dipole moment – a differential current loop as a magnetic dipole – Torque on a current loop placed in a magnetic field.
Self and mutual inductance Self and mutual inductance – determination of self-inductance of a solenoid and toroid and mutual inductance between a straight long wire and a square loop wire in the same plane – energy stored and density in a magnetic field.
Time Varying Fields Time varying fields: Faraday’s laws of electromagnetic induction – its integral and point forms, Maxwell’s fourth equation, Curl (E)=-∂B/∂t, statically and dynamically induced EMF.
1. “Engineering Electromagnetics” by William H. Hayt & John. A. Buck Mc. Graw-Hill Companies, 7th Editon.2006.
1. “ Principles of Electro Magnetics” by Sadiku, Oxford Publications, 4th edition
2. “Introduction to Electro Dynamics” by D J Griffiths, Prentice-Hall of India Pvt.Ltd, 2nd edition
3. “Electromagnetic Field Theory” by Yaduvir Singh,Pearson.
4. Fundamentals of Engineering Electromagnetics by Sunil Bhooshan, Oxford higher Education.
- determine electric fields and potentials using Guass’s law or solving Laplace’s or Possion’s equations, for various electric charge distributions.
- calculate and design capacitance, energy stored in dielectrics.
- calculate the magnetic field intensity due to current, the application of Ampere’s law and the Maxwell’s second and third equations.
- determine the magnetic forces and torque produced by currents in magnetic field
- determine self and mutual inductances and the energy stored in the magnetic field.
- calculate induced EMF, understand the concepts of displacement current and Poynting vector.