Which of the following is an aspect of the piezoelectric effect?
Mechanical deformation of material due to the application of a voltage✓Правильный ответ
Mechanical deformation of material due to the application of a magnetic field
Generation of electrical energy in the presence of light
Increased conductivity in the presence of light
Объяснение
One half of the piezoelectric effect is the converse effect: a voltage applied across the material deforms it mechanically, which is how crystal oscillators, ultrasonic transducers, and piezo buzzers work. Deformation driven by a magnetic field is magnetostriction, and the two light-related choices describe photovoltaic and photoconductive behavior.