Practice Questions
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Which of the following is a common application of negative feedback in operational amplifiers (op-amps)?
The buffer amplifier uses negative feedback so that the output follows the input exactly. Other options are incorrect because A circuit that keeps a s...
In an operational amplifier (op-amp) circuit, which configuration allows for better accuracy and stability in output voltage under real-world conditions, by utilizing negative feedback? Is it the closed-loop configuration or the open-loop configuration?
Closed-loop uses negative feedback, which feeds a small part of the output back to the input. Other options are incorrect because Many think a larger ...
In an operational amplifier, how does negative feedback influence the output signal in common applications such as amplifiers and filters?
Negative feedback feeds part of the output back to the input in the opposite direction. Other options are incorrect because People often think adding ...
How does the phase margin in a negative feedback op-amp circuit influence the distortion levels when used in comparator circuits?
Phase margin shows how close the amplifier is to oscillating. Other options are incorrect because Thinking that a bigger margin makes the circuit loud...
In a negative feedback configuration of an operational amplifier, how does the input and output relationship in a closed-loop system differ from that in an open-loop system in terms of frequency response?
When a part of the output is fed back to the input, the amplifier’s gain is limited and falls off as frequency rises. Other options are incorrect beca...
In a negative feedback configuration of an op-amp, the output is connected back to the input to maintain stability and control. This process helps ensure that the voltages at the inverting and non-inverting inputs are kept equal due to the operation of the op-amp's high gain. This technique is referred to as __________ feedback.
When the op‑amp has very high gain, a small difference between the inputs will drive the output. Other options are incorrect because Positive feedback...
Negative feedback in op-amps is to stability as A: controlling the speed of a car is to ?
When a car follows a speed‑limit rule, it keeps its pace steady. Other options are incorrect because Giving the driver full throttle means the car acc...
How does negative feedback in op-amps contribute to stability and performance in a circuit?
Negative feedback lets the amplifier check its own output and compare it with the input signal. Other options are incorrect because Some think negativ...
How does negative feedback in op-amps enhance stability in electronic circuits?
Negative feedback keeps the op-amp output adjusting until the voltage at the inverting and non‑inverting inputs is the same. Other options are incorre...
An engineer is designing a circuit using an operational amplifier and decides to implement negative feedback. Which of the following scenarios best illustrates the concept of negative feedback in op-amps?
When the amplifier’s output is routed back to its minus input, it pulls that input toward the same voltage as the plus input. Other options are incorr...
A sound engineer is designing a feedback system for a microphone amplifier to minimize noise and enhance audio clarity. They decide to implement negative feedback in their op-amp circuit. Which of the following outcomes is the most likely result of using negative feedback in this scenario?
When negative feedback is added, a small part of the output is returned to the input. Other options are incorrect because Some think feedback makes a ...
When an operational amplifier (op-amp) is configured with negative feedback, what is the primary effect observed at the output?
When negative feedback is used, a fraction of the output is sent back to the input. Other options are incorrect because Some think the output just equ...
Arrange the following steps in the process of how negative feedback operates in an operational amplifier (op-amp): 1) The output voltage is compared with the input voltage; 2) The error signal is generated; 3) The feedback is applied to the inverting input; 4) The op-amp adjusts the output to minimize the error.
The op‑amp first measures its own output and compares it with the input. Other options are incorrect because It assumes the error signal can exist bef...
Which of the following statements about negative feedback in operational amplifiers (op-amps) are true? (Select all that apply)
Negative feedback keeps the op‑amp’s output steady by feeding back a part of the output to the input. Other options are incorrect because In negative ...
Master Negative Feedback in Op-Amps
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