ELECTROMAGNETISM

Degree course: 
Corso di First cycle degree in Physics
Academic year when starting the degree: 
2015/2016
Year: 
2
Academic year in which the course will be held: 
2016/2017
Course type: 
Compulsory subjects, characteristic of the class
Credits: 
10
Period: 
First Semester
Standard lectures hours: 
100
Detail of lecture’s hours: 
Lesson (100 hours)
Requirements: 

Students must have the basics in mathematical analysis and calculus, in mechanics, and in wave phenomena.

Written exam with 4 theory questions and 4 execises (3 hours).

Assessment: 
Voto Finale

The course aims to provide the basic knowledge of electromagnetism.

PART I: ELETTRO/MAGNETOSTATICS
1.1 ELETTROSTATIC FIELDS IN VACUUM
1.1.1 Electric charge and Coulomb’s law
1.1.2 Electrostatic field
1.1.3 Work and electrostatic potential
1.1.4 Electric dipole
1.1.5 Gauss’s law
1.1.6 Divergence theorem
1.1.7 Stokes theorem
1.1.8 Electrostatic Maxwell’s equations
1.1.9 Electrostatic energy and pressure

1.2 ELETTROSTATIC FIELDS IN MATTER
1.2.1 Dieletrics
1.2.2 Polarisation
1.2.3 Electric induction

1.3 ELECTRIC CURRENT
1.3.1 Charge conservation
1.3.2 Ohm’s law
1.3.3 Joule’s effect
1.3.4 Electromotive force
1.3.5 Kirchoff’s laws

1.4 MAGNETOSTATIC FIELDS IN VACUUM
1.4.1 Phenomenology
1.4.2 Magnetic field
1.4.3 Magnetic flux
1.4.4 Magnetic force on moving charges
1.4.5 Laplace second law
1.4.6 Magnetic field from a distribution of currents
1.4.7 Ampere’s circuitation
1.4.8 Magnetostatics Maxwell’s equations

1.5 MAGNETOSTATIC FIELDS IN MATTER
1.5.1 Magnetisation of media
1.5.2 Magnetic induction vector
1.5.3 Microscopic origin of magnetisation
1.5.4 Diamagnetism and paramagnetism
1.5.5 Ferromagnetism and permanent magnets

PART II: CLASSICAL ELECTRODYNAMICS
2.1 ELETTROMAGNETIC INDUCTION
2.1.1 Static Maxwell’s equations
2.1.2 Faraday-Neumann-Lenz’s law
2.1.3 Faraday’s law applications
2.1.4 Autoinduction
2.1.5 RL circuits
2.1.6 Electric oscillations
2.1.7 Maxwell’s equations

2.2 ELETTROMAGNETIC WAVES
2.2.1 Souce-free Maxwell’s equations: plane waves
2.2.2 Sferical waves

2.3 RADIATION FROM MOVING CHARGES
2.3.1 Maxwell’s equations with sources: EM-potentials
2.3.2 Point-like charge
2.3.3 Dipole approximation
2.3.4 EM wave spectrum
2.3.5 Multipoles

2.4 RADIATION–MATTER INTERACTIONS
2.4.1 Diffusion
2.4.2 Dispersion in dielectric media
2.4.3 Absorption of radiation
2.4.4 Free electrons

P. Mazzoldi, M. Nigro, C. Voci, Fisica Vol II, Elettromagnetsimo-Onde. Edises edizioni.
J.D. Jackson, Classical Electrodynamics, Wiley
Notes provided by the teacher.

Lectures with exercises and examples aimed at a thorough understanding of the subject.

Professors