Question
Which of the following is an aspect of the piezoelectric effect?
Answer Options
- A) Mechanical deformation of material due to the application of a voltage
- B) Mechanical deformation of material due to the application of a magnetic field
- C) Generation of electrical energy in the presence of light
- D) Increased conductivity in the presence of light
Correct Answer: A
Explanation
The piezoelectric effect is the coupling between the mechanical properties (stress/strain) and the electrical properties (charge/voltage) in certain materials like quartz or ceramic. It is a bi-directional energy conversion process used in both sensors and actuators.
An essential aspect of the piezoelectric effect is the electrical-to-mechanical conversion: Mechanical deformation of material due to the application of a voltage. When an AC voltage is applied across the crystal faces, the material flexes and vibrates at the applied frequency, which is exploited to create stable frequency oscillators and filters.
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