Discussion
Assertion (A): Assertion: A Darlington pair has a lower input current requirement than a single transistor.
Reason (R): Reason: Its two base-emitter junctions are in series.
Select the correct answer from the options below.
Answer: A
Both statements are true but the second does not explain the first: the low input current follows from the multiplied current gain, while the series junctions explain the higher input voltage requirement - a different consequence entirely. Two true statements about one device need not stand in a causal relation, and separating the two effects of cascading is exactly what this item tests.
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