A. Many holes only
B. A few free electrons and holes
C. Many free electrons only
D. No holes or free electrons
✅ The correct answer is option B.
Semiconductor Theory MCQs
With forward bias to a pn junction , the width of depletion layer__________________?
A. Decreases
B. Increases
C. Remains the same
D. None of the above
✅ The correct answer is option A.
In a semiconductor, current conduction is due to________________?
A. Only holes
B. Only free electrons
C. Holes and free electrons
D. None of the above
✅ The correct answer is option C.
Addition of pentavalent impurity to a semiconductor creates many________________?
A. Free electrons
B. Holes
C. Valence electrons
D. Bound electrons
✅ The correct answer is option A.
A semiconductor has ______________ temperature coefficient of resistance?
A. Positive
B. Zero
C. Negative
D. None of the above
✅ The correct answer is option C.