Question: In an operational amplifier, what is the purpose of negative feedback?
Options:
To increase gain
To stabilize the output
To reduce distortion
To increase bandwidth
Correct Answer: To stabilize the output
Solution:
Negative feedback in an operational amplifier is used to stabilize the output and control the gain.
In an operational amplifier, what is the purpose of negative feedback?
Practice Questions
Q1
In an operational amplifier, what is the purpose of negative feedback?
To increase gain
To stabilize the output
To reduce distortion
To increase bandwidth
Questions & Step-by-Step Solutions
In an operational amplifier, what is the purpose of negative feedback?
Step 1: Understand what an operational amplifier (op-amp) is. It is an electronic device that can amplify voltage signals.
Step 2: Learn about feedback. Feedback is when part of the output signal is fed back to the input.
Step 3: Know the difference between positive and negative feedback. Positive feedback increases the output, while negative feedback reduces it.
Step 4: Recognize that negative feedback is used in op-amps to stabilize the output. This means it helps keep the output signal steady and prevents it from going too high or too low.
Step 5: Understand that negative feedback also controls the gain of the op-amp. Gain is how much the op-amp amplifies the input signal. Negative feedback helps set this gain to a desired level.
Negative Feedback – Negative feedback is a process where a portion of the output signal is fed back to the input in a way that reduces the overall gain, stabilizes the output, and improves linearity.
Operational Amplifier Functionality – Understanding how operational amplifiers work, including their gain characteristics and the role of feedback in their operation.
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