In an n-p-n transistor, the collector current is 28 ~mA . If 80 % of electrons reach the collector, its base current in mA is

Step-by-step solution

It is given that 80 % I _ e = I _ c =28 ~mA aligned & 80 100 I _ e =28 ~mA I _ e =35 ~mA & But, I _e= I _ c + I _ B & I _ B = I _ e - I _ c I _ B =35-28=7 ~mA & aligned