At absolute temperature, an intrinsic semiconductor has________________?

Related Mcqs:

1. 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

2. 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

3. 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

4. A semiconductor has ______________ temperature coefficient of resistance?

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

5. 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

6. 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

7. A semiconductor has generally_______________valence electrons?

   A. 2
   B. 3
   C. 6
   D. 4

8. When a pentavalent impurity is added to a pure semiconductor, it becomes________________?

   A. An insulator
   B. An intrinsic semiconductor
   C. p-type semiconductor
   D. n-type semiconductor

9. A semiconductor is formed by ______________bonds?

   A. Covalent
   B. Electrovalent
   C. Co-ordinate
   D. None of the above

10. A hole in a semiconductor is defined as_________________?

    A. A free electron
    B. The incomplete part of an electron pair bond
    C. A free proton
    D. A free neutron