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In a CE amplifier, output resistance is 5000Ω and input resistance is 2000Ω. If the peak value of signal voltage given in the input is 10 mV and the current gain is 50. Find the peak value of output voltage in millivolts.

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answer is 1250.

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Detailed Solution

Voltage gain $= β \times \frac{R_{L}}{R_{i}} = 50 \times \frac{5000}{2000} = 125$
$∴$ Peak output voltage=Voltage gain x Signal voltage
$= 125 \times 10 m V = 1250 m V = 1.25 V$

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