Assertion : In common base configuration, the current gain of the transistor is less than unity.
Reason : The collector terminal is revers biased for amplification.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion
B. If both assertion and reason are true but the reason is not the correct explanation of the assertion
C. If assertio is true statement but reason is false.
D. If both assertion and reason are false statement

Answer

2

Explanation

For amplifier, emitter terminal is forward biased and collector terminal is reverse biased. In this configuration, the current gain is ratio of change in collector current to the change in emitter current at constant collector base voltage `(V_(CB))`.
`:. alpha=((DeltaI_(C))/(DeltaI_(E)))`
Current gain `(alpha)` is `lt` 1 because collector current `(I_(C))` is always less than emitter current `(I_(E))`