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Question & Answer1
Understand Question2
Review Options3
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Explore TopicChoose the Best Answer
A
It amplifies the difference between its two input voltages.
B
It solely amplifies the larger of the two input voltages.
C
It outputs a constant voltage regardless of input changes.
D
It requires both inputs to be equal for any output.
Understanding the Answer
Let's break down why this is correct
Answer
An operational amplifier is a device that produces an output voltage proportional to the difference between two input voltages, with a very high internal gain. Because of this high gain, even a tiny voltage difference at its inputs can drive a large output voltage. By adding external resistors, the amplifier can be set to perform functions such as amplification, inversion, or summing of signals. For instance, wiring a 1 kΩ resistor from the input to the negative terminal and a 10 kΩ resistor from the output back to the negative terminal makes the op‑amp act as a 10‑times non‑inverting amplifier, turning a 1 V input into a 10 V output.
Detailed Explanation
An op‑amp takes two voltages and makes a big output that depends on how much they differ. Other options are incorrect because This answer assumes the op‑amp only cares about the bigger input; The op‑amp does not give a fixed voltage.
Key Concepts
Operational Amplifiers
Amplification Principles
Differential Inputs
Topic
Operational Amplifiers Basics
Difficulty
medium level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1Which of the following scenarios best illustrates the application of an operational amplifier in a circuit?
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Question 2Which of the following statements about operational amplifiers are true? Select all that apply.
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3
Question 3Which statement best describes the function of an operational amplifier?
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4
Question 4Which of the following statements accurately describe the internal components and function of operational amplifiers (op-amps)? Select all that apply.
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Question 5Which of the following scenarios best illustrates the application of an operational amplifier in a circuit?
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6
Question 6Which of the following statements about operational amplifiers are true? Select all that apply.
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7
Question 7Which statement best describes the function of an operational amplifier?
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8
Question 8Which of the following scenarios best illustrates the application of an operational amplifier in a circuit?
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Question 9Which of the following statements about operational amplifiers are true? Select all that apply.
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