When two semiconductors of p and n type are brought in contact, they form a pn junction which acts like a/an:
Correct answer: C. rectifier
- A. oscillator
- B. amplifier
- C. rectifier
- D. conductor
Explanation
A pn junction acts like a rectifier, allowing the current to flow in one direction while blocking it in the reverse direction. This property makes it useful in converting alternating current (AC) to direct current (DC) in rectification circuits.Incorrect Options and Explanations: (a) oscillator - A pn junction is not typically used as an oscillator. (b) amplifier - A pn junction is not an amplifier; it does not amplify signals. (d) conductor - While a pn junction can conduct current, it exhibits rectifying behavior, not purely conductive behavior.
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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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