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Assertion : A transistor amplifier in ...

Assertion : A transistor amplifier in common emitter configuration has a low input impedence.
Reason : The base to emitter region is forward biased.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are truw but reason is not correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
Input impedance of common emitter configuration`=(DeltaV_(BE))/(Deltai_(B))//v_(CE)="constant"`
Where `DeltaV_(BE)`=voltage across base and emitter,
`Deltai_(B)`=Base current which is order of few microampere.
Thus input impedance of common emitter is low.
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