A. Holes
B. Free electrons
C. Valence electrons
D. Bound electrons
Related Mcqs:
- Addition of pentavalent impurity to a semiconductor creates many________________?
A. Free electrons
B. Holes
C. Valence electrons
D. Bound electrons - 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 - A trivalent impurity has______________valence electrons?
A. 4
B. 5
C. 6
D. 3 - 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 - A pentavalent impurity has______________Valence electrons?
A. 3
B. 5
C. 4
D. 6 - A semiconductor has ______________ temperature coefficient of resistance?
A. Positive
B. Zero
C. Negative
D. None of the above - 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 - 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 - 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 - 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
