\(\Rightarrow \beta=\frac{\Delta I _{ C }}{\Delta I _{ B }}\)

\(R _{ C }=2 k \Omega, R _{ B }=0.50 k \Omega\)

\(\text { Voltage gain }=\frac{\Delta I _{ C } R _{ C }}{\Delta I _{ B } R _{ B }}=\frac{5 \times 10^{-3}}{100 \times 10^{-6}} \times \frac{2}{0.5}\)

\(=\frac{10^{-2}}{5 \times 10^{-5}}=\frac{1000}{5}=200\)