Q. Current gain of a transistor in common base mode is 0.95. Its value in common emitter mode is
A) 0.95
B) 1.5
C) 19
D) $(19)^{- 1}$
Explanation
(c) $\beta = \frac{\alpha}{1 - \alpha} = \frac{0.95}{1 - 0.95} = \frac{0.95}{0.05} = 19$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.