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← ScienceWhich outcome occurs when a piezoelectric crystal experiences depolarization?
A)Loss of accumulated surface charge✓
B)Increased electrical resistance stability
C)Enhanced mechanical resonance frequency
D)Formation of multiple crystal dislocations
💡 Explanation
Depolarization, here caused by heating above the Curie temperature, results in a loss of dipole alignment; this is facilitated by domain switching via the ferroelectric effect. Therefore, surface charge vanishes, because the electric field dissipates; rather than enhanced frequency or dislocation formation, which require different, distinct mechanisms and conditions.
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