Question

20. In a common-base connection, the emitter
current is 6.28mA and collector current is
6.20 mA. Determine the common base
DC current gain.
[Ans: 0.987] please solve in detail​

Answer 1

Given:

In a common-base connection, the emitter current is 6.28 mA and collector current is 6.20 mA.

To find:

Common base DC current gain.

Calculation:

Common base current gain is represented by $\alpha$ . It is calculated by the ratio of collector current and the emitter current.

$\therefore \: \alpha = \dfrac{I_{C}}{I_{E}}$

$= > \alpha = \dfrac{6.20}{6.28}$

$= > \alpha = 0.987$

Hence final answer is :

$\boxed{ \bold{ \large{ \alpha = 0.987}}}$

More information about Current Gain:

• Common Emitter current gain is represented by $\beta$

• Current Gain refers to the relationship between the output current and the input current.

• $\alpha = \dfrac{ \beta }{ \beta + 1}$