In the following common emitter circuit, $β = 100$ and $V_{CE} = 7 V$ . If $V_{BE}$ is negligible, then the base current is

Question

In the following common emitter circuit, &#946; = 100 and V CE = 7 &#160; V . If V BE is negligible, then the base current is

Aicharya · Accepted Answer

The figure below represents the common emitter circuit,

Apply Kirchhoff law,

$- 15 + 2 I_{C} + V_{C E} = 0$

$- 15 + 2 I_{c} + 7 = 0$

$I_{C} = 4 mA$

The common emitter gain is,

$β = \frac{I_{C}}{I_{B}}$

$100 = \frac{4 \times 10^{- 3}}{I_{B}}$

$I_{B} = 0.04 mA$

In the following common emitter circuit, β = 100 and V CE = 7   V . If V BE is negligible, then…