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A transistor is operetaed in common-emit...

A transistor is operetaed in common-emitter configuration at `V_(c)=2V` such that a change in the base current from `100mA` to `200mA` produces a change in the collector current from `5mA` to `10mA`. The current gain is

A

`75`

B

`100`

C

`150`

D

`50`

Text Solution

Verified by Experts

The correct Answer is:
D
`beta=(DeltaI_(C ))/(DeltaI_(B))=((10-5)xx10^(-3))/((200-100)xx10^(-6))=50`
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Knowledge Check

  • 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 200 muA produces a change in the collector current from 5 mA to 10 mA . The current gain is:

    A
    100
    B
    150
    C
    50
    D
    75

  • 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 200 muA produces a change in the collector current from 5 mA to 10 mA . The current gain is

    A
    `75`
    B
    `100`
    C
    `150`
    D
    `50`

  • 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`

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