If the feedback resistor in Q15 (above question) is open, the voltage gain ____________?
Correct answer: A. increases
- A. increases
- B. decreases
- C. is not affected
- D. depends on Ri
Explanation
Opening the feedback resistor removes negative feedback, causing the amplifier gain to rise toward the much larger open-loop gain. Thus the voltage gain increases rather than decreases or remaining unchanged.
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