At room temperature, an intrinsic semiconductor has_______________?
Correct answer: B. A few free electrons and holes
- A. Many holes only
- B. A few free electrons and holes
- C. Many free electrons only
- D. No holes or free electrons
Explanation
An intrinsic semiconductor has equal numbers of thermally generated free electrons and holes; at room temperature their concentration is relatively small. Thus it has a few of both types of carriers, not one type alone.
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