Question

While a collector to emitter voltage is constant in a transistor, the collector current changes by $8.2mA$ when the emitter current changes by $8.3mA$. The value of forward current ratio $h_{fe}$ (or $\alpha$) is

• A. $0.9879$
• B. $8.30$
• C. $8.2158$
• D. $8.0123$

Answer 1

The correct option is A $0.9879$

$\begin{array}{c}Forwardcurentratio=\frac{changeincollector}{changeinemittercurrent}\\ \alpha =\frac{8.2}{8.3}=0.9879\end{array}$

Hence,

option $\left(A\right)$ is correct answer.