The operation of a transistor requires______________?
Correct answer: D. None of the above
- A. That the emitter be heated
- B. That the base be heated
- C. That the collector be heated
- D. None of the above
Explanation
A transistor operates through electrical biasing of its emitter, base, and collector junctions; none of these regions must be heated for ordinary transistor action. Students may choose a because heating increases thermionic emission in a vacuum tube, but that principle does not describe a transistor.
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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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