Q. The current gain $\alpha$ of a transistor in common base mode is 0.995. Its gain $\beta$ in the common emitter mode is
A) 200
B) 99
C) 0.995
D) None of these
Explanation
(a) $\beta = \frac{\alpha}{1 - \alpha} = \frac{0.995}{1 - 0.995} = 199 \approx 200$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.