Extra exam question E6D01
Subelement E6, CIRCUIT COMPONENTS· Group E6D
What is piezoelectricity?
- A.The ability of materials to generate electromagnetic waves of a certain frequency when voltage is applied
- B.A characteristic of materials that have an index of refraction which depends on the polarization of the electromagnetic wave passing through it
- C.A characteristic of materials that generate a voltage when stressed and that flex when a voltage is applied (correct answer)
- D.The ability of materials to generate voltage when an electromagnetic wave of a certain frequency is applied
WhyPiezoelectricity is the characteristic of materials that generate a voltage when stressed and flex when a voltage is applied. Piezoelectricity is the property certain crystalline materials have of generating a voltage when they're mechanically stressed, and conversely, physically flexing or deforming when a voltage is applied across them, the two-way electromechanical effect that quartz crystals and piezo buzzers both rely on, answer C. It isn't about generating electromagnetic waves directly, isn't a description of polarization-dependent refractive index, and it isn't a description of light-triggered voltage generation, that's a photovoltaic effect, unrelated to piezoelectricity.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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