Acceptor and donor impurities donate______________?
Correct answer: C. p-carriers and n-carriers respectively
- A. n-carriers only
- B. p-carriers only
- C. p-carriers and n-carriers respectively
- D. n-carriers and p-carriers respectively
Explanation
A trivalent acceptor impurity creates holes, which are p-type carriers, while a pentavalent donor impurity contributes extra electrons, which are n-type carriers. The order in the question is acceptor then donor, giving p-carriers and n-carriers respectively; option d reverses them.
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About PN Junction
A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
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