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  • In common emitter amplifier, the current gain is . The collector resistance and input resistance are <img alt="\mathrm{5 k\O

In common emitter amplifier, the current gain is 62. The collector resistance and input resistance are \mathrm{5 k\Omega\: and \, 500 \Omega} respectively. If the input voltage is \mathrm{0.01 V}, the output voltage is
 

Option: 1

\mathrm{0.62\: V}


Option: 2

\mathrm{6.2\: V}


Option: 3

\mathrm{62\: V}


Option: 4

\mathrm{620\: V}


Answers (1)

\mathrm{Voltage\: gain = resistance \: gain \times \: current \: gain}

\mathrm{ \text { Or } \frac{V_{\text {out }}}{V_{\text {in }}}=\frac{R_{\text {out }}}{R_{\text {in }}} \times \beta }

\mathrm{ \text { Or } V_{\text {out }}=\frac{R_{\text {out }}}{R_{\text {in }}} \times \beta \times V_{\text {in }} }

\mathrm{\therefore \quad V_{\text {out }}=\frac{5000}{500} \times 62 \times 0.01=6.2 \mathrm{~V} }

Hence option 2 is correct.




 

Posted by

Kshitij

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