Question

For a common emitter circuit amplifier, the load resistance of the output circuit is $500$ times the resistance of the input. circuit. If $\alpha =0.98$, then, current gain is :

• A. $0.98$
• B. $50$
• C. $98$
• D. $49$

Answer 1

The correct option is D $49$

Given, $\alpha =0.98$

$\beta =\frac{\alpha }{1-\alpha }=\frac{0.98}{1-0.98}=49$