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Doping silicon with a pentavalent element like phosphorus creates a semiconductor in which:
AHoles are the majority carriers in the conduction band region
BFree electrons are minority and holes are majority everywhere
CFree electrons are the majority carriers in the conduction band
DNeither electrons nor holes contribute to the small current
Answer & Solution
Correct answer: C. Free electrons are the majority carriers in the conduction band
Pentavalent dopant donates extra electrons; the result is n-type with electrons as majority carriers.
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