A pn junction can not be used as:
Correct answer: C. An amplifier
- A. A detector
- B. A rectifier
- C. An amplifier
- D. None of these
Explanation
p-n junction is also known as a diode.It is a device that is composed of p-type and n-type semiconductors.Its half part is made up of p-type semiconductor and another half part is made of n-type semiconductor.Its working principle is based on forward biasing and reverse biasing.It has various applications like it is used in making rectifiers, which converts A.C. current into D.C. current.It is used in making LEDs ( light-emitting devices).Its working principle is also used in making detectors.But, it is not used in making amplifiers, because the p-n junction does not increase or decrease the input signal and it does not amplify the signal.
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About Electronics
A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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