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.Management Sciences
Category: Semiconductor Theory
When a pentavalent impurity is added to a pure semiconductor, it becomes________________?
0
A. An insulator
B. An intrinsic semiconductor
C. p-type semiconductor
D. n-type semiconductor
When a pure semiconductor is heated, its resistance_________________?
A. Goes up
B. Goes down
C. Remains the same
D. Can’t say
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
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
Addition of pentavalent impurity to a semiconductor creates many________________?
A. Free electrons
B. Holes
C. Valence electrons
D. Bound electrons
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