Question

In a common base transistor circuit, the current gain is $0.98$. On changing the emitter current by $5.00$mS, the change in collector current is$?$

• A. $0.196$mA
• B. $2.45$mA
• C. $4.9$mA
• D. $5.1$mA

Answer 1

The correct option is C $4.9$mA

Given, $\alpha =0.98$
$\therefore \alpha =\frac{\Delta I_c}{\Delta I_e}$
$0.98=\frac{\Delta I_c}{5}$
$\Rightarrow \Delta I_c=4.9$mA.