This handout of course reminders and corrected exercises of vibrations, waves & electrognetism unit, is intended for undergraduate LMD students (L2-second year) in the two domains of formation, named "matter sciences " and "sciences and technologies . The manuscript brings together the courses and exercises that I have given in recent semesters within the faculties: "electrical and computer engineering" and "faculty of sciences", of M. Mammeri University of Tizi-Ouzou. Its content complies with the official program of the Ministry of Higher Education and Scientific Research of the Algerian Republic. It will allow students to follow their courses in good conditions, to better understand the series of exercises, and to pass successfully their exams in the unit "vibrations, waves & electromagnetism".