📚 Learning Guide
Internal Components of Op-Amps
easy

True or False: An operational amplifier's ability to amplify a signal is solely determined by the number of transistors it contains.

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A

True

B

False

Understanding the Answer

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Answer

False. While the number of transistors in an op‑amp does affect its internal complexity, the gain it can deliver depends mainly on the design of those transistors, their bias points, the feedback network, supply voltage, and the op‑amp’s architecture, not just transistor count. For example, two op‑amps with the same transistor count can have very different gains if one uses a higher‑gain transistor configuration or a different feedback resistor ratio. The overall amplification also relies on the op‑amp’s open‑loop gain, bandwidth, and stability, all of which are engineered beyond simply adding more transistors. Thus, transistor count alone does not solely determine amplification capability.

Detailed Explanation

The number of transistors helps set the speed and power, but how the op‑amp is wired, the feedback that keeps the output stable, and the bias currents also decide its real gain. Other options are incorrect because The belief that adding more transistors automatically makes an op‑amp better is a misconception.

Key Concepts

Op-amp functionality
Transistor role in amplification
Circuit design principles
Topic

Internal Components of Op-Amps

Difficulty

easy level question

Cognitive Level

understand

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