Politecnico di Torino
Politecnico di Torino
Politecnico di Torino
Academic Year 2017/18
Physics II
1st degree and Bachelor-level of the Bologna process in Engineering And Management - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Ummarino Giovanni ORARIO RICEVIMENTO A2 FIS/03 45 15 0 0 12
Ummarino Giovanni ORARIO RICEVIMENTO A2 FIS/03 45 15 0 0 12
SSD CFU Activities Area context
A - Di base
A - Di base
Fisica e chimica
Fisica e chimica
Subject fundamentals
The course provides to students a basic education on the fundamentals of electromagnetism, as well as the ability to apply physical models and mathematical concepts to practical problems in engineering.
Prerequisites / Assumed knowledge
It 'requires that the student is able to apply the differential and integral calculus for functions of one or more variables, the linear ordinary differential equations, the Gauss and Stokes¡¦s theorems, the vector calculus and knows the general themes covered in the course of Physics I
Electric charges. Insulators and conductors. Electrical structure of matter. Measurement of electrical charges. Coulomb's law. Electrostatic field. Electrostatic field produced by a continuous distribution of charge. Motion of a charge in an electrostatic field.
Work of the electric force. Potential. Calculation of the electrostatic potential. Electrostatic potential energy. The electrostatic field as potential gradient. Equipotential surfaces. The rotor of the electric field. The electric dipole. The strength of an electric dipole.
Flow of the electric field. Gauss' law. Some applications and implications of Gauss' law. Electrostatic field in the neighborhood of a surface layer of charging. Gauss's law in differential form. Maxwell's equations for electricity. Poisson and Laplace equations.
Conductors in equilibrium. Conductor cable. Electrostatic shield. Systems of conductors. Capacitors. Connection of capacitors. Energy of the electrostatic field. Dielectrics. The dielectric constant. Polarization of dielectrics. General equations of electrostatics in the presence of dielectrics.
Electrical conduction. Electric current. Electricity stationary. Ohm's law of electrical conduction. Resistors in series and in parallel. Electromotive force. Charge and discharge of a capacitor through a resistor. Displacement current. Kirchhoff's laws for electrical networks.
Magnetic interaction. Magnetic field. Electricity and magnetism. Magnetic force on a moving charge. Magnetic force on a current carrying conductor. Mechanical moments of plane circuits. Ampere equivalence principle. Hall effect. Motions of charged particles in a magnetic field. Magnetic field produced by a current. Calculation of magnetic fields produced by particular circuits. Electrodynamic actions between the current carrying circuits. Ampere's law. Magnetic properties of matter. Permeability and magnetic susceptibility. Curie¡¦s laws. Hysteresis in ferromagnetic materials.
The Gauss law for the magnetic field. General equations of magnetostatics in the presence of materials.
Faraday's law of electromagnetic induction. Origin of the induced electric field and the induced electromotive force. Application of Faraday's Law. Selfinduction. Mutual induction. Ampère-Maxwell law. Maxwell's equations. Maxwell's equations in differential form.
The vector potential and gauge invariance. Maxwell's equations for the potentials.
Electrical oscillations. Alternating current circuits. The RCL circuit in series. Resonance. Power in circuits with alternating current. Trasformers.
General consideration on waves. Waves equation. Introduction to electromagnetic waves. Plane waves. Deduction of electromagnetic flat waves by Maxwell's equations. Plane electromagnetic wave energy. Poynting vector. Spectrum of electromagnetic waves. Electromagnetic waves in a conductor and in a dielectric.
Reflection and refraction of waves. Huygens-Fresnel principle. The laws of reflection and refraction. Interference. Sum of waves. Coherent and incoherent sources. Young device with N sources aligned and coherent. Diffraction of Fraunhofer. Diffraction of a rectilinear slit. Diffraction grating.
Texts, readings, handouts and other learning resources
1)P. Mazzoldi, M. Nigro, C. Voci ¡§Elementi di Fisica: Elettromagnetismo-Onde ¡¨ vol. II, EdiSES (Napoli, 2010);
2) P. Mazzoldi, M. Nigro, C. Voci ¡§Fisica: Elettromagnetismo-Onde ¡¨ vol. II, EdiSES (Napoli, 2010);
3) S. Focardi, I. Massa, A. Uguzzoni, ¡§Fisica Generale: Elettromagnetismo¡¨ Casa Editrice Ambrosiana (2007);
4) S. Focardi, I. Massa, A. Uguzzoni, ¡§Fisica Generale: Onde e Ottica¡¨ Casa Editrice Ambrosiana (2007);
5) C. Mencuccini, V. Silvestrini: ¡§ Fisica 2 - Elettromagnetismo e Ottica¡¨ Liguori Editore (1988);
6) Halliday, Resnick, Jearl Walker, Principles of Physics, Vol II.
7) A. Tartaglia "300 Esercizi svolti di elettromagnetismo e ottica" Editrice Levrotto&Bella (Torino, 1986).
Assessment and grading criteria
The examination consists of :
1 ) a mandatory test at the computer ( LAIB )
2 ) an oral test of the theory.
The test LAIB has a duration of one hour; consists of thirty questions ( multiple choice ) , involving definitions, deductions, theorems , resolutions of exercises.
The students must book before two working days prior to the date of the test; to access them should bring the book and identity card .
During the test, you cannot see books and notes.
The answers to each question are typically 5 : a right , three wrong , and one said: " I do not know ." The correct answer is worth ( +1), that is the wrong answer (-1 / 3) , "do not know " (0).
The vote of the test will be , thirty, equal to the number of right answers - ( 1/3) * number of wrong answers +3 .
If the outcome will be positive (score „d18/30) , you can have the following cases:
18/30 „Tscore „T23/30: the student can access the oral short whose maximum score is 24;
score „d24/30 : the student can access at the short oral and then whatever the test score
always he will have as final result a score „T24/30
or the student can choose the long oral and so the final result ranges between rejection and 30/ 30 L.
The oral examination must be performed in the same date of the LAIB test.

Programma definitivo per l'A.A.2016/17

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