Question

for the common base transistor DC current gain is 0.98 Find the value of current amplification factor​

Answer 1

Answer:

By constants (or parameters) of a transistor where α and β are the AC current gains of a transistor in the common-base configuration and in the common-emitter configuration respectively.

Answer 2

Answer:

Given, α=0.98

∴α=

ΔI

e

ΔI

c

0.98=

5

ΔI

c

⇒ΔI

c

=4.9mA.

Explanation:

Given, That the current gain is 0.98

The change in emitter current is I

e

=5mA

Therefore the change in collector current is I

c

=0.98×I

e

=0.98×5=4.9mA

Therefore the correct option is A.