Question

For a CB amplifier current gain is $0.54$. If the emitter current is $6.8mA$, the collector current will be

• A. $1.7mA$
• B. $2.7mA$
• C. $3.7mA$
• D. $4.7mA$

Answer 1

The correct option is C $3.7mA$

We have current gain as
$\alpha =\frac{\Delta I_C}{\Delta I_E}$
or
$0.54=\frac{\Delta I_C}{6.8}$

Thus, collector current = $6.8\times 0.54=3.7mA$.