MCQ
In a common base transistor circuit, the current gain is $0.98$. On changing emitter current by $5.00 \,mA$, the change in collector current is ......... $mA$
- A$0.196$
- B$2.45$
- ✓$4.9$
- D$5.1$
✓
Answer
Correct option: C.
$4.9$
c
(c)
(c)
$C B$ - configuration
$\alpha=0.98 \quad \alpha=\frac{\Delta I_C}{\Delta I_E}$
$\Delta I_E=5 mA$
$\Delta I_C=\alpha \Delta I_E=0.98 \times 5 \times 10^{-3}$
$=4.9 \times 10^{-3} \,A$
$=4.9 \,mA$
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