The current gain 'a' of a transistor is 0.95 . What would be the change in collector currnet corresponding to a change of 0.4 mA in the base current in a common emittter arrangement ?

Options

A. 7.6 mA
B. 6.6 mA
C. 5.6 mA
D. 8.6 mA

Answer

A

Explanation

`prop=(I_(c))/(I_(b))`
`prop=(I_(c))/(I_(c)+I_(b))`
`prop I_(c)+prop I_(b)=I_(c)`
`I_(c)=((prop)/(1-prop))I_(b)`
`=(0.95xx0.4)/(1-0.95)=7.6 mA`.