Question

For a common emitter connection the values of constant collector current and base current are $5mA$ and $50$$\mu A$ respectively. The current gain will be

• A. $10$
• B. $20$
• C. $40$
• D. $100$

Answer 1

The correct option is D $100$

Given that:
$I_c=5mA$
$I_b=50\mu A=5\times {10}^{-2}mA$
The current gain is
$\beta =\frac{I_c}{I_b}$
$\beta =\frac{5}{5\times {10}^{-2}}=100$