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← ScienceWhich anisotropic effect appears within barium titanate crystals subjected to stress?
A)Piezoelectric charge generation✓
B)Thermionic emission increase
C)Superconducting transition onset
D)Photoelectric current saturation
💡 Explanation
Stress on barium titanate crystals causes piezoelectricity because the mechanical deformation induces *electric dipole alignment*. Therefore, a voltage emerges across the crystal, rather than effects related to temperature, high current, or lack of light.
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