Practically _ current flows in a reverse p-n junction.
Correct answer: A. No
- A. No
- B. Very large
- C. Few milliamperes
- D. Both A and C
Explanation
a) No: This option suggests that practically no current flows in a reverse p-n junction. When a p-n junction is reverse-biased (i.e., the p-side is connected to the negative terminal of a voltage source and the n-side is connected to the positive terminal), only a very small leakage current flows. This current is typically so small that it can be considered negligible for most practical purposes.
This question appeared on the UHS MDCAT 2008 paper, which you can sit online with every answer explained.
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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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