A. 6 x 104 cm
B. 60 x cm
C. 3 x 106 cm
D. 6 x 10-4 cm
✅ The correct answer is option B.
Semiconductor Theory MCQs
An n-type semiconductor is______________?
A. Positively charged
B. Negatively charged
C. Electrically neutral
D. None of the above
✅ The correct answer is option C.
The impurity level in an extrinsic semiconductor is about_______________of pure semiconductor ?
A. 10 atoms for 108 atoms
B. 1 atom for 108 atoms
C. 1 atom for 104 atoms
D. 1 atom for 100 atoms
✅ The correct answer is option B.
A forward biased pn junction diode has a resistance of the order of_____________?
A. O
B. kO
C. MO
D. None of the above
✅ The correct answer is option A.
A semiconductor has generally_______________valence electrons?
A. 2
B. 3
C. 6
D. 4
✅ The correct answer is option D.
The leakage current in a pn junction is of the order of________________?
A. Aa
B. mA
C. kA
D. µA
✅ The correct answer is option D.
When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on_________________?
A. Junction capacitance
B. Minority carriers
C. Majority carriers
D. None of the above
✅ The correct answer is option B.
At room temperature, an intrinsic silicon crystal acts approximately as_______________?
A. A battery
B. A conductor
C. An insulator
D. A piece of copper wire
✅ The correct answer is option C.
The leakage current across a pn junction is due to________________?
A. Minority carriers
B. Majority carriers
C. Junction capacitance
D. None of the above
✅ The correct answer is option A.
When a pure semiconductor is heated, its resistance_________________?
A. Goes up
B. Goes down
C. Remains the same
D. Can’t say
✅ The correct answer is option B.