Assertion: The current gain in common base circuit is always less than one.
Reason: At constant collector votalge the change in collector current is more than the change in emitter current.

Options

A. If both the assertion and reason are true and reason is a true explantion of the assertion.
B. If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.
C. If the assertion is true but reason false
D. If both the assertion and reason are false.

Answer

C

Explanation

The current gain in common base circuit `alpha=((DeltaI_(C))/(DeltaI_(E)))_(V_(C))`. The change in collector current is always less than the change in the emitter current.
`DeltaI_(C)ltDeltaI_(E)`. Therefore, `alphalt1`.