**PHY ****102: Electromagnetism**** ****(3)**

*Cylindrical and Spherical coordinate systems***: **Line, surface and volume elements

*Introduction to vector calculus:*** **Gradient, Divergence and curl of Fields, Divergence theorem, Stokes Theorem, Dirac delta function.

*Electrostatics:* Coulomb’s Law, Gauss’s law (integral and differential form) and its applications, Electric potential, Laplace’s and Poisson’s equations (no solutions), Energy of a charge distribution, , Boundary conditions, Conductors, The uniqueness theorem (statement only), Method of images, Field and Potential due to dipole. Multipole expansion, Polarization in a dielectric, vectors **D**, **P** and** E**, linear dielectrics, force on dielectrics.

*Electric currents:* Line, surface and volume currents and current densities, electrical conductivity and Ohm’s law, equation of continuity, energy dissipation.

*Motion of charged particles in electric and magnetic fields*

*Magnetostatics:* Biot-Savart and Ampere’s law, divergence and curl of **B, **integral and differential form of Ampere’s law, vector potential, Boundary conditions, Magnetic dipoles, Multipole expansion, magnetization in materials, H, B and M, Dia-, para- and ferro-magnetism, B and H in bar-magnet.

*Electrodynamics:* Electromagnetic induction, motional emf and Faraday’s law, inductance and energy in magnetic field, the displacement current, Maxwell’s equations.

*Electromagnetic Wave*: EM wave in vacuum and dielectrics, Poynting’s theorem, Reflection, transmission, refraction of EM wave

*Suggested Books*:

- D. J. Griffiths,
*Introduction to electrodynamics 3rd Ed*. - E. M. Purcell,
*Electricity and Magnetism (Berkeley Physics course) 2nd Ed.* - R. P. Feynman, R. B. Leighton and M. Sands,
*The Feynman Lecture of Physics Vol 2*. - E. Hecht,
*Optics*,*4th Ed*. - F. A. Jenkins and H. E. White, Fundamentals of Optics.
- K. Ghatak,
*Optics*. - K. Ghatak,
*An introduction to modern optics*. - K. K. Sharma,
*Optics: principles and applications*. - G. R. Fowles,
*Introducton to Modern Optics*.

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