Depletion region of a junction is formed_____________?
Correct answer: A. during the manufacturing process
- A. during the manufacturing process
- B. under forward bias
- C. under reverse bias
- D. when temperature varies
Explanation
When p-type and n-type materials are joined, majority carriers diffuse across the junction and leave fixed ions behind, creating the depletion region at equilibrium. Reverse bias widens this region, but does not originally create it, so formation during fabrication or joining is the closest option. The likely mistake is choosing reverse bias because reverse voltage makes the depletion layer more noticeable and wider.
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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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