Question

Current amplification factor of a common base configuration is `0.88`. Find the value of base current when the emitter current is `1 m A`.
A. `0.12 mA`
B. `0.1 mA`
C. `0.5 mA`
D. `0.2 mA`

Answer 1

Correct Answer - A
In a common-base arrangement, the current amplification factor `alpha = (I_(C))/(I_(E)) rArr I_(C) = alpha I_(E) = 0.88 xx 1 = 0.88 mA`
and `I_(B) = I_(E) - I_(C)`.