Question

The relation between α and β is _________

(a) β=α/(1-α)

(b) α= β/(1+β)

(c) β=α/(1+α)

(d) α= β/(1- β)

I have been asked this question in an international level competition.

This intriguing question comes from The Common Base Configuration in division Transistor Characteristics of Electronic Devices & Circuits

Answer 1

Right choice is (b) α= β/(1+β)

To elaborate: β is an ac base amplification factor. α is called as current amplification factor. The relation of IC and IB change as IC= βIB+ (1+ β)ICBO.