# ELECTRIC AND MAGNETIC FIELDS

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Code
60335
2020/2021
CREDITS
6 credits during the 2nd year of 8716 Electrical Engineering (L-9) GENOVA
SCIENTIFIC DISCIPLINARY SECTOR
ING-IND/31
LANGUAGE
Italian
TEACHING LOCATION
GENOVA (Electrical Engineering)
semester
2° Semester
Prerequisites
modules
This unit is a module of:
Teaching materials

OVERVIEW

Module of static and low frequency Electric and Magnetic Fields

## AIMS AND CONTENT

LEARNING OUTCOMES

The module is designed to provide to Students the knowledge and operational skills indispensable to properly describe, analyze and solve problems of static and quasi-stationary Electric and Magnetic Fields, introducing the models based on their integral formulation, with particular emphasis on Magnetic Circuits and the practical applications of electromagnetic induction.

AIMS AND LEARNING OUTCOMES

At the end of the module, the Student shall have correctly understood the basic concepts of low frequency Electromagnetic Theory, shall be able to correctly classify the different types of encountered problems, and to correctly formulate the solution, arriving, when possible, to determine their analytical solution.

Teaching methods

Theory lectures and related exercises in the second semester (6 credits).

SYLLABUS/CONTENT

• The equations of Electromagnetic Field in absence of relative motion among material media: Maxwell’s Equations in integral form. Constitutive equations of materials. Energy stored in the Electromagnetic Field.
• Static Electric Field: its evaluation methods. Energy and Forces. Principle of Virtual Work. Definition of resistance and capacity.
• Static Magnetic Field: its evaluation methods. Energy and Forces. Principle of Virtual Work.
• Magnetic materials: diamagnetic, paramagnetic and ferromagnetic.
• Magnetic Circuits. Self and mutual inductances. Definition of reluctance. Magnetic circuits built using linear, nonlinear materials, and permanent magnets. Magnetic networks.
• Quasi-stationary Electromagnetic Fields: Stray Currents. Magnetic Circuits in Steady State Alternate Current operations.
• Electromagnetic Induction: Lorentz’s Force. Faraday’s Law of Electromagnetic induction. Induced Voltage.
• Brief description to transient phenomena and high frequency Electromagnetic Fields.

- M. Nervi: “Dispense del corso”

Bibliography (for OPTIONAL study deepening on specific subjects):

• F. Barozzi, F. Gasparini: “Fondamenti di elettrotecnica: elettromagnetismo”, UTET, 1989
• S. Bobbio, E. Gatti: “Elementi di elettromagnetismo”, Boringheri, 1984
• M. A. Plonus: “Applied Electromagnetics”, McGraw-Hill international Editions, 1988

## TEACHERS AND EXAM BOARD

Ricevimento: Students in need of further clarifications are received via Teams, on appointment (tel. 010-353-2044, e-mail: mario.nervi@unige.it)

Exam Board

MARIO NERVI (President)

MANSUETO ROSSI

GIORGIO MOLINARI

PAOLO MOLFINO

PAOLA GIRDINIO

MASSIMO BRIGNONE (President Substitute)

## LESSONS

Teaching methods

Theory lectures and related exercises in the second semester (6 credits).

LESSONS START

According to the official teaching calendar

ORARI

L'orario di tutti gli insegnamenti è consultabile su EasyAcademy.

## EXAMS

Exam description

Oral only.

Assessment methods

The examination of Electric and Magnetic Fields is based on an oral discussion, lasting about 30 minutes, normally about the solution of practical problems, and optional questions about the related theory.

The final marking of Elettrotecnica is the average of the marks (rounded to the higher integer figure) of its modules (Electric Circuit and Electric and Magnetic Fields). The partial examinations must be passed in the following order: at first Electric Circuit, and afterwards Electric and Magnetic Fields.

Exam schedule

Date Time Location Type Notes
10/09/2021 09:30 GENOVA Scritto Prova scritta di Circuiti Elettrici (60336) Lo scritto di Circuiti -se sarà effettuato in presenza- si tiene in Aula B4.
13/09/2021 09:30 GENOVA Orale L'orale di Campi -se sarà effettuato in presenza- si tiene in aula B4.
16/09/2021 09:30 GENOVA Orale L'orale di Circuiti -se sarà effettuato in presenza- si tiene in aula B4.