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← ScienceWhich outcome occurs when an oscillating voltage is applied across a piezo crystal?
A)Acoustic wave emission occurs in material✓
B)Uniform expansion despite field gradient
C)Crystal resonance increases impedance greatly
D)Dielectric breakdown is catastrophically bypassed
💡 Explanation
Acoustic wave emission occurs because of the piezoelectric effect, which causes lattice deformation and vibrational wave generation; therefore sound waves are emitted, rather than uniform thermal expansion or a gross dielectric breakdown, which could occur under other extreme conditions.
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