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A transistor is operated in common emitt...

A transistor is operated in common emitter configuration at `V_(c)=2 V` such that a change in the base current from `100 muA` to `300 muA` produces a change in the collector current from `10 mA` to `20 mA`. The current gain is

A

`75`

B

`100`

C

`25`

D

`50`

Text Solution

Verified by Experts

The correct Answer is:
D
`beta=(DeltaI_(C))/(DeltaI_(B))=((20-10)mA)/((300-100)mA)=(10xx10^(-3))/(200xx10^(-6))=50`
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