The current gain of a transistor in a common base arrangement in 0.98 . Find the change in collector current corresponding to a change of 5.0 mA in emitter current . What would be the change in base current?

Options

A. 4 mA
B. 4.5 mA
C. 5.6 mA
D. zero

Answer

B

Explanation

Current gain `=("small change in collector current"(Deltai_(c)))/("small change in emitter current"(Deltai_(e)))`
`0.9 =(Deltai_(c))/(5)`
`rArrr Deltai_(c)=0.9xx5=4.5 mA`