CODE 57193 ACADEMIC YEAR 2020/2021 CREDITS 14 cfu anno 2 SCIENZA DEI MATERIALI 8765 (L-30) - GENOVA SCIENTIFIC DISCIPLINARY SECTOR FIS/01 LANGUAGE Italian TEACHING LOCATION GENOVA MODULES Questo insegnamento è composto da: GENERAL PHYSICS GENERAL PHYSICS TEACHING MATERIALS AULAWEB AIMS AND CONTENT LEARNING OUTCOMES Understanding of the basic concepts of electromagnetism in vacuum and in materials. Increased learning and synthesis skills. PREREQUISITES Knowledge of the main physics concepts of the first year (dimensional analysis, vectors, laws of dynamics, energy conservation) TEACHING METHODS Traditional lectures; exercises solved by the lecturer with the student participation; laboratory experiments performed by the students in the presence of the teacher, with experiment tracks provided in advance. Laboratory activities will comprise two credits. Expected hours of individual study: 220 Classroom hours: 136 Hours employed in laboratory experiments or other activities: 10 SYLLABUS/CONTENT The course is divided into two modules (8 + 6 CFUs) 3rd MODULE Lectures: Electric charge and electric field Electric charge. Conductors and insulators. Coulomb’s law. The electric field. Gauss’ law. Electric potential. Capacitance and capacitors. Energy stored in a charged capacitor. Electric current Current density. Resistance and resistivity. Ohm’s law. Electric circuits. Kirchhoff's laws. Power in electric circuits. Magnetic field Lorentz force. Magnetic force on a current-carrying wire. Biot-Savart law. Force between two parallel currents. Ampère’s law. Magnetic flux. Faraday-Neumann-Lenz’s law. Induced electric field. Inductance. Self-induction. RL circuits. Energy stored in a magnetic field. Maxwell equations and electromagnetic waves Ampère-Maxwell’s law. Displacement current. Maxwell’s equations in integral and differential form. Electromagnetic wave equation. Electromagnetic plane waves. Laboratory experiments: DC circuits (Series and parallel connection of resistors; measurement of ohmic and non-ohmic I-V characteristics) RC circuits, measurement of the time constant. 4th MODULE Electric oscillations. Alternating current AC current. RLC series circuit. Transformer Electrical field in insulators Dielectric materials and constant dielectric. Potential and field generated by an electric dipole. Electric dipole approximation and field generated by a system of charges. Dielectric properties of insulators; Polarizability for orientation and deformation. Vector polarization and dielectric constant. Electrostatic equations in the presence of dielectrics: electric shift vector. Boundary conditions in the presence of dielectrics. The Clausius–Mossotti relation. Brief remarks on ferroelectric compounds. Magnetism in materials Magnetic moment and microscopic currents. Diamagnetism and paramagnetism. Magnetization, Curie Law. Magnetic material: magnetization current and magnetic field in matter. General equations of magnetostatics in the presence of magnetized materials. Boundary conditions in the presence of magnetic materials. Ferromagnetic materials; Magnetic circuits and Hopkinson's law. Hysteresis loop of a iron. Soft and hard magnetic materials: main applications. Electromagnetic waves EM wave energy, wave intensity and Pointing vector. Electromagnetic radiation generated by an oscillating dipole and spherical wave. EM wave polarization. Maxwell equations in transparent media and refractive index. dSnell's Law: Reflection and Refraction of the Light. The intensity of reflexed and refracted waves (Fresnel's laws). Absorbing materials: absorption coefficient and complex refractive index. Laboratory Experiment: Measurement of the magnetic field inside a coil and in the presence of an iron core RECOMMENDED READING/BIBLIOGRAPHY D. Halliday, R. Resnick, J. Walker - Fundamentals of Physics, 10th edition, vol.2 - Wiley Slides of lessons uploaded in Aulaweb TEACHERS AND EXAM BOARD ANNALISA RELINI Ricevimento: At the end of every lesson or on request MARINA PUTTI Ricevimento: all days iupon e-mail arrangement Exam Board ANNALISA RELINI (President) LUCA VATTUONE MARINA PUTTI (President Substitute) LESSONS LESSONS START http://www.fisica.unige.it/scienzadeimateriali/index.php?option=com_content&task=view&id=24&Itemid=35 Class schedule GENERAL PHYSICS EXAMS EXAM DESCRIPTION Written and oral exam ASSESSMENT METHODS Written test at the end of each module (or cumulative written test on the overall program), consisting in exercises and simple problems. Partial tests consist of three exercises that must be solved in three hours, cumulative tests consist of four exercises (two exercises for each module) that must be solved in four hours. Students who have received a grade of at least 15/30 in each of the partial tests or in the final written exam are admitted to the oral exam. The oral exam consists in the discussion of the written test(s) and in two questions on the course topics, one for each module. The number of questions may be increased, either to achieve an excellent mark, or to reach the level required to pass the exam. Exam schedule Data appello Orario Luogo Degree type Note Subject 27/01/2021 09:00 GENOVA Scritto + Orale 17/02/2021 09:00 GENOVA Scritto + Orale 16/06/2021 09:00 GENOVA Scritto + Orale 14/07/2021 09:00 GENOVA Scritto + Orale 10/09/2021 09:00 GENOVA Scritto + Orale 27/01/2021 09:00 GENOVA Scritto + Orale 17/02/2021 09:00 GENOVA Scritto + Orale 16/06/2021 09:00 GENOVA Scritto + Orale 14/07/2021 09:00 GENOVA Scritto + Orale 10/09/2021 09:00 GENOVA Scritto + Orale