1.

The current of transistor in common emitter mode is 49. The change in collector current and emitter current corresponding to the change in the base current by `5.0 muA`m will be :-A. `245mu A, 250mu A`B. `240mu A, 235mu A`C. `260mu A, 255mu A`D. None of these

Answer» Correct Answer - A
Current gain, `beta=(DeltaI_(C))/(DeltaI_(B))`, where `DeltaI_(C )` is change in collector current and `DeltaI_(B)` is change in base current.
`rArr DeltaI_(C)=betaDeltaI_(B)=49xx5=245 muA`
Also, `DeltaI_(E)=DeltaI_(B)+DeltaI_(C)`
`=(245+5)muA=250muA`


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