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Doping with a pentavalent atom gives which type?
AAn intrinsic
BAn insulator
CAn n-type
DA p-type
Answer & Solution
Correct answer: C. An n-type
1. A pentavalent atom has one electron more than silicon needs.
2. That spare electron is free to conduct.
3. Negative carriers dominate, giving n-type material.
4. So the answer is an n-type.
_Source: NCERT Class 12 Physics, Ch 14 'Semiconductor Electronics'_
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