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Question: Answered & Verified by Expert
Assertion : In common base configuration, the current gain of the transistor is less than unity.
Reason : The collector terminal is reverse biased for amplification.
PhysicsSemiconductorsAIIMSAIIMS 2006
Options:
  • A If both assertion and reason are true and reason is the correct explanation of the assertion
  • B If both assertion and reason are true but reason is not the correct explanation of the assertion
  • C If assertion is true, but reason is false
  • D Both assertion and reason are false statements.
Solution:
2258 Upvotes Verified Answer
The correct answer is: If assertion is true, but reason is false
The common base configuration of $n-p-n$ transistor is used for voltage amplification. The current amplification is very small. Assertion is true.
The collector is reverse biased for voltage amplification. The Reason given has not mentioned that it is voltage amplification. The Reason is therefore incomplete by itself. It is wrong.

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