pq25ans - E. there is no depletion zone. _B _ 3. A current...

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PHYS-1200 PHYSICS II SPRING 2005 Post Quiz 25 Name___________ ANSWERS _________________ In the space provided, to the left of the question number, write the letter corresponding to the best answer to the question. _B _ 1. When a small fraction of the silicon atoms in pure silicon are replaced by aluminum atoms (valence = 3), the material that results is: A. an n -type semiconductor B. a p -type semiconductor C. radioactive D. a legally controlled substance E. none of the above _A _ 2. In an unbiased p-n junction: A. the n side is at higher potential than the p side. B. the p side is at higher potential than the n side. C. the n side and the p side are at the same potential. D. the electric field is zero throughout the junction.
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Unformatted text preview: E. there is no depletion zone. _B _ 3. A current will flow in the forward direction in a p-n junction rectifier when: A. the n side is connected to the positive terminal of a battery and the p side is connected to the negative terminal of the same battery. B. the p side is connected to the positive terminal of a battery and the n side is connected to the negative terminal of the same battery. C. both the n and the p sides are connected to the positive terminal of a battery. D. both the n and the p sides are connected to the negative terminal of a battery. E. the temperature goes below 0 C (273 K)....
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