In a CE amplifier, voltage gain =____________________ x RAC/Rin?
Correct answer: D. β
- A. α
- B. (1 + α)
- C. (1+ β)
- D. β
Explanation
For a CE amplifier, the voltage gain can be written approximately as Av = β(RAC/Rin), where β is the common-emitter current gain. The factors α and 1 + α belong to related transistor-current relationships, not this form.
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