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← ScienceWhich process causes increased electrical resistance when applying strain to a metal?
A)Piezo-resistance via electron band distortion✓
B)Increased electron-phonon scattering effects
C)Thermionic emission across atomic boundaries
D)Quantum tunneling between potential wells
💡 Explanation
Applying strain distorts the metallic crystal lattice, reducing symmetry. This decreases the electronic band overlap because it alters the orbital hybridization, leading to piezo-resistance, therefore current flow becomes more difficult rather than enhanced quantum tunneling.
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