1. Electrons present in p-type material due to thermal pair generation are
A. Majority carriers
B. Minority carriers
C. Dual carriers
D. Blockers
✅ The correct answer is option B.
Electronics (Physics) MCQs
2. Semi-conductors with donor atoms and free electrons belong to the type
A. N
B. P
C. Mix
D. Any of above
✅ The correct answer is option A.
3. Semi-conductor germanium and silicon are
A. Pentavalent
B. Trivalent
C. Divalent
D. Tetravalent
✅ The correct answer is option D.
4. Acceptor and donor impurities donate
A. N-carriers only
B. P-carriers only
C. P-carriers and n-carriers respectively
D. N-carriers and p-carriers respectively
✅ The correct answer is option C.
5. P-N junction when reversed biased acts as a
A. Capacitor
B. Inductor
C. On switch
D. Off switch
✅ The correct answer is option D.
6. In P-N-P transistor the collector current is
A. Equal to emitter current
B. Slightly less than emitter current
C. Greater than emitter current
D. Any of above
✅ The correct answer is option B.
7. In N-P-N transistor, P works as
A. Collector
B. Emitter
C. Base
D. Any of above
✅ The correct answer is option C.
8. The simplest type of rectification known as half-wave rectification is obtained by
A. Using a transistor
B. Suppressing the harmonics in A.C voltage
C. Suppressing half wave of A.C supply by using diode
D. Using a Coolidge tube
✅ The correct answer is option C.
9. Identify the correct statement about minority carriers
A. Holes in n-type and free electrons in p-type
B. Holes in n-type and p-type
C. Free electrons in n-type and holes in p-type
D. Free electrons in n-type and p-type
✅ The correct answer is option A.
10. Depletion region of a junction is formed
A. During the manufacturing process
B. Under forwarding bias
C. Under reverse bias
D. When temperature varies
✅ The correct answer is option A.