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Question 11.C-A.70: In a n-p-n transistor circuit, the collector current is 9.9 ...

In a n-p-n transistor circuit, the collector current is 9.9 mA. If 90% of the electrons emitted reach the collector, find out the value of emitter current and base current.

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I_{ e }=I_{ b }+I_{ c }

Here collector current I_{c} = 9.9 mA which is 90% of emitter current I_{e} hence, I_{e} = 11 mA, and base current

I_{ b }=I_{ e }-I_{ c }

 

I_{ b }=11-9.9=1.1 mA

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