At room temperature, an intrinsic semiconductor has_______________?

Related Mcqs:

1. At absolute temperature, an intrinsic semiconductor has________________?

   A. A few free electrons
   B. Many holes
   C. Many free electrons
   D. No holes or free electrons

2. 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

3. 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

4. In an intrinsic semiconductor, the number of free electrons_____________?

   A. Equals the number of holes
   B. Is greater than the number of holes
   C. Is less than the number of holes
   D. None of the above

5. A semiconductor has ______________ temperature coefficient of resistance?

   A. Positive
   B. Zero
   C. Negative
   D. None of the above

6. 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

7. Addition of pentavalent impurity to a semiconductor creates many________________?

   A. Free electrons
   B. Holes
   C. Valence electrons
   D. Bound electrons

8. An n-type semiconductor is______________?

   A. Positively charged
   B. Negatively charged
   C. Electrically neutral
   D. None of the above

9. Addition of trivalent impurity to a semiconductor creates many_______________?

   A. Holes
   B. Free electrons
   C. Valence electrons
   D. Bound electrons

10. 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