Common Base Amplification Factor refer to which of the below mentioned ratios?

Common Base Amplification Factor refer to which of the below mentioned ratios?

a) Collector current to emitter current when Vcb is constant
b) Emitter to base current when Vce is constant
c)Collector to base current when Vee is constant
d)None of the above

Correct Answer : a) Collector current to emitter current when Vcb is constant

Explanation :

Common base implies that current flows from collector to emitter terminal. Always the voltage of common terminal in amplification factor is constant.