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A transistor is operated in common-emitter configuration at V_{_{c}}=2 V such that a change in the base current from 100\mu A to 200\mu A produces a change in the collector current from 5mA to 10mA.The current gain is

  • Option 1)

    100

  • Option 2)

    150

  • Option 3)

    50

  • Option 4)

    75

 

Answers (1)

 

Relation between ? and ? -

eta = frac{alpha }{1-alpha }
 

- wherein

alpha = frac{I_{C}}{I_{E}}

eta = frac{I_{C}}{I_{B}} (current gain )

 

 Current gain = \frac{\Delta I C}{\Delta IB}= \frac{5mA}{\Delta 100 \mu A}=50

 

 


Option 1)

100

This option is incorrect

Option 2)

150

This option is incorrect

Option 3)

50

This option is correct

Option 4)

75

This option is incorrect

Posted by

Vakul

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