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← ScienceWhich behavior causes reduced conductivity from increased lattice temperature?
A)Decreased electron mean free path✓
B)Increased number of electron collisions
C)Expanded interatomic spacing
D)Narrowing of material's band gap
💡 Explanation
Increased temperature causes increased lattice vibrations, a mechanism called electron-phonon scattering, which decreases electron mean free path and raises resistance. Therefore, conductivity decreases rather than interatomic modifications or band gaps changing, because electron flow is impeded.
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