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← ScienceWhich mechanism influences electrical conductivity in doped silicon crystal?
A)Impurity atoms create mobile charge carriers✓
B)Phonon scattering increases electron mobility
C)Grain boundaries diminish carrier pathways
D)Fermi level aligns with valence band
💡 Explanation
Doping introduces impurities, and the increased quantity of charge carriers enhances total conductivity because the mechanism of increased "carrier concentration" allows for an increase in electrical current; therefore increased current flow, rather than decreased, is responsible.
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