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A transistor is used in common emitter c...

A transistor is used in common emitter configuration. Given its `alpha=0.9`, calculate the change in collector current when the base current changes by `2muA`.

A

`1muA`

B

`0.9muA`

C

`30muA`

D

`18muA`

Text Solution

Verified by Experts

The correct Answer is:
D
Using `beta=(alpha)/(1-alpha)=0.9/(1-0.9)=9`
`implies(Deltal_(C))/(Deltal_(B))=9implies(Deltal_(C))/2=9`
`:. Deltal_(C)=9xx2=18muA`
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