Discussion
Assertion (A): Assertion: Degeneration improves an amplifier's gain accuracy.
Reason (R): Reason: It reduces the gain.
Select the correct answer from the options below.
Answer: B
Both statements are true but the second does not explain the first: the accuracy comes from the gain becoming a ratio of two resistors rather than a function of the operating current, and the reduction in gain is the price rather than the mechanism. A circuit could reduce gain with a simple attenuator and gain no accuracy at all. Distinguishing the mechanism from the cost is exactly what this item tests. The shared properties explain why these schemes form a family, and the differences explain why more than one exists. The shared properties explain why these schemes form a family, and the differences explain why more than one exists.
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