Question

when the 1/alpha-1/beta = physics alpha=beta/1+alpha beta=alpha/1-beta

Answer 1

Answer:

Correct option is D)

Current gain =β=

ΔI

B

ΔI

C

for a transistor in common emitter mode.

Current gain =α=

ΔI

E

ΔI

C

for a transistor in common base mode.

∴β=

1−α

α

∴

α

1

−

β

1

=

α

1

−

α

1−α

=

α

α

=1.