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Question & Answer
Choose the Best Answer
It amplifies the difference between its two input voltages.
It solely amplifies the larger of the two input voltages.
It outputs a constant voltage regardless of input changes.
It requires both inputs to be equal for any output.
Understanding the Answer
Let's break down why this is correct
An op‑amp makes a huge voltage that comes from the small difference between the two tiny voltages it sees. Other options are incorrect because Some think the op‑amp only copies the higher input, but that would ignore the small voltage difference it needs; The output is not a fixed number; it moves whenever the two inputs change.
Key Concepts
Operational Amplifiers Basics
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Definition
Operational amplifiers (op-amps) are devices that amplify the difference between their two inputs by a large gain factor. They have five terminals, including power supply terminals, inverting and non-inverting inputs, and an output terminal.
Topic Definition
Operational amplifiers (op-amps) are devices that amplify the difference between their two inputs by a large gain factor. They have five terminals, including power supply terminals, inverting and non-inverting inputs, and an output terminal.
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