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A transistor connected at common emitter mode contains load resistance of $5 \mathrm{k} \Omega$ and an input resistance of $1 \mathrm{k} \Omega$. If the input peak voltage is $5 \mathrm{mV}$ and the current gain is 50 , find the voltage gain.
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$250$
Voltage gain, $A_v=\beta \times \frac{R_o}{R_i}=50 \times \frac{5}{1}=250$
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