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A
product
B
sum
C
difference
D
average
Understanding the Answer
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Answer
An operational amplifier amplifies the difference between its two inputs, where the inputs are labeled as vp and vn. In a differential amplifier the output voltage is the product of the input voltage difference and the amplifier’s gain, so the device is very sensitive to the small voltage difference between the positive (vp) and negative (vn) terminals. The op‑amp’s internal circuitry forces the two inputs to stay nearly equal in a negative‑feedback configuration, making the output proportional to the tiny mismatch between vp and vn. For example, if vp is 0. 5 V, vn is 0.
Detailed Explanation
An op‑amp’s job is to take the tiny voltage gap between its two pins and magnify it. Other options are incorrect because Some think an op‑amp multiplies its inputs because the term amplifier suggests more; Adding the two voltages would give the sum of vp and vn, but an op‑amp does not add them.
Key Concepts
Operational Amplifiers
Voltage Amplification
Input Terminals
Topic
Operational Amplifiers Basics
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1In an operational amplifier, the output voltage is determined by the difference between the two input voltages multiplied by the ________ of the op-amp.
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Practice
2
Question 2An operational amplifier amplifies the __________ between its two inputs, where the inputs are labeled as vp and vn.
easyEngineering
Practice
3
Question 3An operational amplifier amplifies the __________ between its two inputs, where the inputs are labeled as vp and vn.
easyEngineering
Practice
4
Question 4In an operational amplifier, the output voltage is determined by the difference between the two input voltages multiplied by the ________ of the op-amp.
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Practice
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