Discussion
A follower has \( R_{E} = 1 \ \mathrm{k\Omega} \) at \( 2 \ \mathrm{mA} \). Its voltage gain is about
Answer: B
The intrinsic resistance is thirteen ohms at two milliamps:
\[ A_{v} = \frac{1000}{1000+13} \approx 0.987 \]
giving about 0.987. A value above one is impossible for a follower, which rules out 1.013 without any calculation. Checking a computed gain against the physical bound the topology imposes is a quick and reliable sanity test.
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