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← ScienceWhich outcome arises when applying excessive voltage across ionic ceramics?
A)Electrochemical migration causes material failure✓
B)Piezoelectric effect induces crystal deformation
C)Ferroelectric domain switching enables polarization
D)Dielectric breakdown enhances signal propagation
💡 Explanation
Material failure occurs due to excessive voltage enabling electrochemical migration; this moves ions and weakens grain boundaries because of ionic conductivity. Therefore, migration rather than piezoelectricity causes breakdown given sufficient applied voltages.
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