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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
In an $n-$type silicon, which of the following statement is true
  • A
    Electrons are majority carriers and trivalent atoms are the dopants.
  • B
    Electrons are minority carriers and pentavalent atoms are the dopants
  • ✓
    Holes are minority carriers and pentavalent atoms are the dopants.
  • D
    Holes are majority carriers and trivalent atoms are the dopants.
✓

Answer

Correct option: C.
Holes are minority carriers and pentavalent atoms are the dopants.
c
The correct statement is $(c). $

In an $n-$type silicon, the electrons are the majority carriers, while the holes are the minority carries. An n-type semiconductor is obtained when pentavalent atoms, such as phosphorus, are doped in silicon atoms

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