Negative feedback_______________?
Correct answer: B. increases the input impedance and bandwidth
- A. increases the input and output impedances
- B. increases the input impedance and bandwidth
- C. decreases the output impedance and bandwidth
- D. does not affect impedance or bandwidth
Explanation
For the usual voltage-series negative feedback used in op-amp circuits, input impedance and bandwidth increase, while output impedance decreases. Therefore, the combination stated in option b is correct.
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