Question

If the collector current is $5.488mA$ for an emitter current of $5.60mA$ in commom base configuration of a transistor then, the value of the base current amplification factor $\left(\beta \right)$ will be

• A. $48$
• B. $49$
• C. $50$
• D. $51$

Answer 1

Answer: (B)

Current gain, $\beta =\frac{\textit{I}_{c}}{\textit{I}_{\textit{b}}}=\frac{\textit{I}_{c}}{\textit{I}_{\textit{e}} - \textit{I}_{c}}=\frac{\text{5.488}}{\text{5.60} - \text{5.488}}=\frac{\text{5.488}}{\text{0.112}}=49.$