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## Subject: PHYSICS II (A.A. 2020/2021)

### degree course in PHYSICS

Course year 1 9 Unit Fisica generale II Experimental and Applied Studies (lesson) TAF: Compulsory subjects, characteristic of the class SSD: FIS/01 CFU: 9 Teachers: Marco AFFRONTE oral final vote Italiano
Contents download ### Overview

Knowledge and understanding:
At the end of the course the student should have acquired the elements of classical electromagnetism and of the basic properties of dielectric and magnetic matter.

Applying knowledge and understanding:
The student at the end of the course should be able to apply the knowledge acquired to simple
problems of electromagnetism.

Making judgements:
The student at the end of the course should be able to recognize by himself the appropriate
Approximations to the calculation of relevant quantities in electromagnetism.

Communicating skills:
The student at the end of the course should be able to present orally the topics dealt with in the course using an appropriate science language and mathematical formalism.

Learning skills:
The main text book is Italian and it is complemented by chapter or articles in English. This will stimulate the learning skills and to go deep in complementary subjects to the main course.

The content of the course Fisica I, in particular
the laws of Mechanics - Conservation Laws Energy

Mathematical analysis: derivatives and integrals, study of function, trigonometry, Euler's laws

### Course contents

Electric charge, force and Coulomb's law. Conservative electric field, electrostatic potentials due to discrete and continuous charge distributions, electric dipole. Flux of the Electric Field, Gauss's Law, Equations of electrostatics in vacuum in integral and differential form. Electric fields in matter: conductive and dielectric materials. Polarization and Maxwell's equations in the presence of dielectrics. Conductors in electrostatic equilibrium, electrostatic induction, capacitance of conductor systems. Electrostatic energy of conductor systems in electrostatic equilibrium, Capacitors, Combination of capacitors. Current intensity and density, electric currents and electromotive forces. Continuity equation. Ohm's law: ohmic conductors. Conductivity. Energy balances in the circuits. Resistors in series and parallel. Joule's Law, Work and Power, Kirchoff's Laws. Magnetic interaction: Lorentz force and motions of charges in magnetic fields. Magnetic induction field B. Flow of B and magnetic sources. Laplace's laws. Biot-Savart's law, Ampère's law. Moment of the magnetic dipole. Interaction of magnetic dipoles with the magnetic field. Actions between current-carrying circuits. Flow and circulation of the magnetic induction field, Scalar potential and vector potential, Coulomb's Gauge. Magnetization and dia-para- and ferro-magnetic materials. Equations of magnetostatics in vacuum and in the presence of materials. Electromagnetic induction: Lenz and Faraday-Neumann's law. Mutual and self-induction. Displacement current, Ampere-Maxwell's law and its relationship with the continuity equation. Electric oscillations: RC, RL, LC, and RLC circuits, Periodic signals, electrical impedance and its representation with complex numbers. Resonance. Maxwell's equations in complete integral and differential form.

### Teaching methods

Lectures and excercises in the classroom For working students: possibility to follow the course on textbooks.

### Assessment methods

The exam consists of a written test aimed at verifying the ability to solve electromagnetism problems and an oral test aimed at to verify the knowledge of the laws of electromagnetism and their theoretical and experimental implications and developments. The overall mark takes into account the results of both tests. Rehearsals could be conducted in the presence or remotely depending on the evolution of the COVID19 situation

### Learning outcomes

Knowledge and understanding:
The learning of concepts and basic laws of electromagnetism must allow the student to describe phenomena related to electromagnetism through the concepts of source and field.

Applying knowledge and understanding:
The application of the fundamental laws of electromagnetism must bring the student to solve problems and interpret Experiences in a quantitative way.

Making judgments:
At the end of the course the student should be able to choose the most appropriate description of the problem of electromagnetism, by, for example, the use of the concepts of field or potential, the use of the symmetries of the problem, the laws of Maxell in full or local.

Communication skills:
The written test will allow the student to set a problem of electromagnetism in a rigorous and orderly. The test oralepermettera 'the student to develop the ability' to support a scientific discussion with appropriate language.

Learning skills:
At the end of the course students will have developed enough curiosity for the topics covered and the capacity to take on their own side of some aspects
proposed topics in the course.