Discussion
A stage's components are as follows.
| Component | Value |
|---|---|
| Collector resistor | 3.3 k |
| Emitter resistor, unbypassed | 330 |
| Collector current | 1 mA |
What is its approximate voltage gain?
Answer: C
Including the intrinsic 26 ohms in the denominator:
\[ A_{v} \approx -\frac{3300}{330+26} \approx -9.3 \]
so about -9, slightly below the bare ratio of ten. The uncorrected ratio is a defensible first estimate, and recognising it as an approximation rather than the answer is what the question is really asking.
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