Question

In a transistor, beta=45, the voltage across 5k? resistance which is connected in the collector circuit is 5volts. Find the base current.

Answer 1

Solution

The collector current is

$I=\frac{V}{R}\\=\frac{5}{5000}\\=0.001A$

The current gain for transistor is

$I_c=\frac{I}{\beta}\\=\frac{0.001}{45}\\=2.22*10^{-5}A$