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A
Voltage follower
B
Oscillator circuit
C
Signal generator
D
Digital circuit
Understanding the Answer
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Answer
Negative feedback is often used in op‑amps to set a precise, stable gain and to reduce distortion. By feeding a portion of the output back to the input in the opposite phase, the circuit automatically corrects any error between the desired and actual output. This technique produces linear amplifiers such as the inverting or non‑inverting amplifier, where the gain is simply the ratio of two resistors. For example, connecting two resistors in a classic inverting amplifier configuration gives a fixed gain of –R2/R1, and the negative feedback keeps the output at the correct level. Thus, using negative feedback is a common way to build accurate, low‑noise amplifiers.
Detailed Explanation
The buffer amplifier uses negative feedback so that the output follows the input exactly. Other options are incorrect because A circuit that keeps a signal running needs positive feedback, not negative; Creating a new signal requires an energy source, not just copying an existing one.
Key Concepts
Common applications
Topic
Negative Feedback in Op-Amps
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1In an operational amplifier, how does negative feedback influence the output signal in common applications such as amplifiers and filters?
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Question 2An 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?
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3
Question 3Which of the following statements about negative feedback in operational amplifiers (op-amps) are true? (Select all that apply)
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Question 4Which of the following is a common application of negative feedback in operational amplifiers (op-amps)?
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5
Question 5In an operational amplifier, how does negative feedback influence the output signal in common applications such as amplifiers and filters?
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6
Question 6An 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?
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7
Question 7Which of the following statements about negative feedback in operational amplifiers (op-amps) are true? (Select all that apply)
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8
Question 8Which of the following is a common application of negative feedback in operational amplifiers (op-amps)?
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9
Question 9An 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?
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Question 10Which of the following statements about negative feedback in operational amplifiers (op-amps) are true? (Select all that apply)
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