CODE  104744 

ACADEMIC YEAR  2022/2023 
CREDITS 

SCIENTIFIC DISCIPLINARY SECTOR  INGINF/02 
LANGUAGE  Italian 
TEACHING LOCATION 

SEMESTER  1° Semester 
MODULES  This unit is a module of: 
TEACHING MATERIALS  AULAWEB 
The target of the module is to provide basic notions of electromagnetism and to enable students to understand and be able to evaluate the electromagnetic aspects that determine the behaviour the simplest electrical components and circuits.
At the end of the course, the students will be able to:
1. explain the most important phenomena of electrostatics and magnetostatics
2. explain the fundamental concepts underlying the operation of electrical components
3. solve simple problems of electrostatics and magnetostatics
4. solve simple problems concerning the operation of electrical components
Lessons and exercises are carried out in the classroom by the teacher.
1. Electric charge, quantization, its negligibility and continuous models. Electric charge density. Law of conservation of electric charge. Electric charge and matter. Coulomb's law. (2 h; tot. 2 h)
2. Static electric field. Lines of force. Fundamental laws of electrostatics. Calculation of the electric field in simple cases. Superposition principle, electric potential, energy of systems of electric charges. A few considerations on the energy density associated with the electric field. Links with circuit theory. (8 h; tot. 10 h)
3. Conductors, insulators and their properties. Capacitors. (5 h; tot. 15 h)
4. Electric current. Current intensity. Electric current density. Relations between i and j. Resistivity and conductivity. A few considerations on microscopic phenomena and on the Joule effect. Circuits and connections with the theory of circuits. (6 h; tot. 21 h)
5. Lorentz force and definition of the magnetic induction field. Notes on other possible forces acting on electric charges. Outline of forces acting on currents immersed in a magnetic field. Fundamental laws of magnetostatics. Calculation of the magnetic induction field in simple cases. (4 h; tot. 25 h)
6. Magnetic induction flux through a closed surface and concatenated with a closed line. Electromagnetic induction. Self and mutual induction. Inductors. (5 h; tot. 30 h)
Didactic material prepared by the teacher.
S. Bobbio, E. Gatti, Elementi di elettromagnetismo, Bollati Boringhieri, 1991.
D. Pescetti, Elettromagnetismo, Piccin, 1985.
J. Walker, D. Halliday, R. Resnick, Fundamentals of physics, Wiley, 10th edition, 2014.
Office hours: Monday, from 5 to 6 p. m., third floor, Via Opera Pia 11a, or by appointment.
All class schedules are posted on the EasyAcademy portal.
The exam is oral and consists of two questions, for a total duration of half an hour. One of the questions will be theoretical and one will be focused on the resolution of an exercise.
The theoretical question will allow to evaluate the ability to explain the most relevant aspects of electrostatics and magnetostatics or the fundamental concepts that underlie the operation of the most important electrical components. The exercise will allow to evaluate the ability to solve simple problems in the same contexts.
Date  Time  Location  Type  Notes 
