The process by which the potential barrier of the deplection region can be increased or decreased is called:
Correct answer: B. Biasing
- A. Amplification
- B. Biasing
- C. Modulation
- D. Doping
Explanation
Biasing is the application of DC voltage to set up certain operating conditions. It either increases or decreases the strength-barrier potential of the junction. A forward bias reduces the strength of the potential barrier, whereas a reverse bias strengthens the potential barrier. This corresponds to the statement of the question, and thus option B is the correct option.
This question appeared on the ETEA MDCAT 2011 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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