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When base -emitter voltage of a transist...

When base -emitter voltage of a transistor connected in the common-emitter mode is changed by `20 mV` the collector current is changed by `25 mA`. Find the transconductance.

A

`1.25 Omega^(-1)`

B

`2.5Omega^(-1)`

C

`0.5Omega^(-1)`

D

`5.5Omega^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`g_(m)=(DelaI_(C))/(DeltaV_(BE))=(25xx10^(-3))/(20xx10^(-3))=1.25Omega^(-1)`
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