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  • In a common emitter transistor, the current gain is . What is the change in collector current, when the change in base curr

In a common emitter transistor, the current gain is 80 . What is the change in collector current, when the change in base current is 250 \mu \mathrm{A}
 

Option: 1

80 \times 250 \mu \mathrm{A}
 


Option: 2

(250-80) \mu \mathrm{A}
 


Option: 3

(250+80) \mu \mathrm{A}
 


Option: 4

250 / 80 \mu \mathrm{A}


Answers (1)

best_answer

\mathrm{\text { Current gain } \beta=\frac{\Delta i_c}{\Delta i_b} \Rightarrow \Delta i_c=\beta \times \Delta i_b=80 \times 250 \mu \mathrm{A}}

Hence option 1 is correct.

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