1.

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` isA. `0.9mA`B. `18mA`C. `20mA`D. `0.1mA`

Answer» Correct Answer - B
`alpha=(Deltai_(c))/(Deltai_(e))=0.9=(Deltai_(c))/(Deltai_(c)+Deltai_(b))`


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