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← ScienceWhich mechanism causes increased resistance in strained silicon crystal?
A)Piezoresistive effect alters band structure✓
B)Increased scattering broadens energy bands
C)Resonance creates impurity conductivity channels
D)Thermoelectric effect increases phonon density
💡 Explanation
The piezoresistive effect causes resistivity changes because mechanical stress in the silicon crystal alters the band structure, affecting carrier mobility. Therefore, options B, C, and D aren't directly related to stress effects, rather than intrinsic material defects or environmental conditions.
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