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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`. The change in collector current when the base current changes by `2mA` is

A

`0.9mA`

B

`18mA`

C

`20mA`

D

`0.1mA`

Text Solution

Verified by Experts

The correct Answer is:
B
`alpha=(Deltai_(c))/(Deltai_(e))=0.9=(Deltai_(c))/(Deltai_(c)+Deltai_(b))`
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