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.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Electronics
660 free Electronics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More PN Junction questions
Forward current through a semi conductor diode circuit is due to____________?
Which one of the following is not a donor impurity ?
In the transistor schematic symbol, the arrow______________?
In p-n-p transistor the collector current is________________?
Semi-conductors with donor atoms and free electrons belong to the type________________?
The especially designed semiconductor diodes used as indicator lamps in electronic circuits are___________?