Calculating Emitter, Base and Collector Currents in an NPN Transistor

[cowgiljl]

The emitter current in a certian npn transitor is 8 mA. If .8% of the minority carrier injected into the base recombing with the holes, find the base current , collector current and the exact value of alpha

i am not sure how to get this started

thanks

joe

 

[cowgiljl]

still struggling and REALLY don't know how to go about this problem

thanks
joe

 

[Guybrush Threepwood]

As you know I_E = I_B + I_C
From the text I would gess that I_B = 0.8% from I_C, so just substitute in the first equation and you should find alpha