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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

`2.50 Omega^(-1)`

C

`0.5 Omega^(-1)`

D

`5.5 Omega^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`g_(m) = (Delta I_(c))/(Delta V_(BE)) = (25 xx 10^(-3))/(20 xx 10^(-3))=1.25 Omega^(-1)`.
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