A transistor amplifier has high output impedance because ______________?
Correct answer: B. Collector has reverse bias
- A. Emitter is heavily doped
- B. Collector has reverse bias
- C. Collector is wider than emitter or base
- D. None of the above
Explanation
The reverse-biased collector-base junction gives the transistor a high resistance at its output, producing high output impedance in amplifier operation. Emitter doping and collector width are construction details, not the main direct reason stated here.
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