ELECTROMAGNETISM
- Overview
- Assessment methods
- Learning objectives
- Contents
- Bibliography
- Teaching methods
- Contacts/Info
No particular prerequisites are needed besides the basics of mathematics and classical mechanics acquired in the first year of the degree course.
Written test with 4 exercises to be performed in 3 hours, plus an oral exam after passing the written exam. Each exercise in the written test has an assigned mark in units of 30th, according to the complexity of the exercise, for a total of 30/30. In the evaluation of the written test, errors in the derivation of the numerical values of physical quantities are considered less important than error in the solving procedure. The written test is considered to be positive with a higher or equal rating of 18. The final vote is assigned by an average of the written test evaluation and the oral test.
The course aims to provide the basic knowledge of electromagnetism, both static and dynamic. The classical theory of electromagnetic phenomena is one of the foundational pillars of every undergraduate degree in Physics. The student will have to demonstrate that she/he understands the phenomenology, applications, and physical theory underlying Maxwell's equations, with particular reference to the radiative phenomena of non relativistic moving charges. In addition, it is expected that the student will be able to analyze, and solve, through the acquired knowledge and skills, a broad spectrum of problems and exercises related to electromagnetic phenomena. Special care will be given to develop those critical skills aimed at getting a deeper understanding of particularly interesting topics covered by the course.
PART I: ELECTRO / MAGNETOSTATIC
1.1 ELECTROSTATIC IN VACUUM
1.1.1 Electric charge and Coulomb law
1.1.2 Electrostatic field
1.1.3 Work and electrostatic potential
1.1.4 Electric Dipole
1.1.5 Gauss Law
1.1.6 Divergence Theorem
1.1.7 Stokes Theorem
1.1.8 Static Maxwell equations
1.1.9 Energy and electrostatic pressure
1.2 ELECTROSTATIC IN MEDIA
1.2.1 Dielectrics
1.2.2 Polarization
1.2.3 Electric induction
1.3 ELECTRIC CURRENT
1.3.1 Charge conservation
1.3.2 Ohm Law
1.3.3 Joule Effect
1.3.4 Electromotive force
1.3.5 Kirchoff's Laws for Electric Networks
1.4 MAGNETOSTATIC IN VACUUM
1.4.1 Phenomenology of magnetic interaction
1.4.2 Magnetic field
1.4.3 Magnetic field flow
1.4.4 Magnetic force on a motorcycle charge
1.4.5 Second Laplace Formual
1.4.6 Magnetic field from a current distribution
1.4.7 Ampere Circuit Theorem
1.4.8 Maxwell equations for magnetostatics
1.5 MAGNETOSTATIC IN MEDIA
1.5.1 Magnetization of matter
1.5.2 The magnetic induction vector
1.5.3 Microscopic origin of magnetization
1.5.4 Diamagnetism and paramagnetism
1.5.5 Ferromagnetism and permanent magnets
PART II: CLASSICAL ELECTRODANAMICS
2.1 ELECTROMAGNETIC INDUCTION
2.1.1 Static Maxwell equations
2.1.2 Faraday-Neumann-Lenz Law
2.1.3 Faraday Law Applications
2.1.4 Auto-Induction
2.1.5 RL Circuits
2.1.6 Electric oscillations
2.1.7 Maxwell equations
2.2 ELECTROMAGNETIC WAVES
2.2.1 Source-free Maxwell equations: plain waves
2.2.2 Spherical waves
2.3 RADIATION FROM MOVING CHARGES
2.3.1 Maxwell Equations with Source: EM Potential
2.3.2 Point-like charge
2.3.3 Dipole approximation
2.3.4 Electromagnetic wave spectrum
2.3.5 Multipoles
2.4 RADIATION-MATTER INTERACTIONS
2.4.1 Diffusion
2.4.2 Chromatic dispersion in a dielectric
2.4.3 Absorption of radiation
2.4.4 Free electrons
For Part I of the course we recommend the text:
P. Mazzoldi, M. Nigro, C. Voci, Physics Vol II, Electromagnetic-Onde. Edises editions.
Part II is performed on .pdf notes provided by the teacher.
A more advanced reference text is
J.D. Jackson, Classical Electrodynamics, Wiley
Frontal lessons with exercises (80 hours total) .
Appointment by e-mail (haardt@uninsubria.it)