When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on_________________?

Related Mcqs:

1. 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

2. A semiconductor has ______________ temperature coefficient of resistance?

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

3. At room temperature, an intrinsic semiconductor has_______________?

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

4. 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

5. When a pure semiconductor is heated, its resistance_________________?

   A. Goes up
   B. Goes down
   C. Remains the same
   D. Can’t say

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

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

7. An n-type semiconductor is______________?

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

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

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

9. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor_______________?

   A. Remains the same
   B. Increases
   C. Decreases
   D. None of the above

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