In a common emitter amplifier, using output resistance of 5000Ω and input resistance of 2000Ω , if the peak value of input signal voltage is 10 mV and β =50 is given. Find peak value of output voltage -

Question

In a common emitter amplifier, using output resistance of 5000Ω and input resistance of 2000Ω , if the peak value of input signal voltage is 10 mV and β =50 is given. Find peak value of output voltage - (A) 5× 10- 6V (B) 2.5× 10- 4 V (C) 1.25 V (D) 125 V

Tardigrade Admin · Accepted Answer

for CE amplifier Voltage gain A=β ((Ro/Ri)) A=50× ((5000/2000)) ; A=125=(vo u t p u t/Vi n p u t) ; 125=(V0/10 m V) ; V0=1.25V

Q. In a common emitter amplifier, using output resistance of $5000Ω$ and input resistance of $2000Ω$ , if the peak value of input signal voltage is $10 mV$ and $β = 50$ is given. Find peak value of output voltage -

$5 \times 1 0^{- 6} V$

$2.5 \times 1 0^{- 4} V$

$1.25 V$

$125 V$

for CE amplifier
Voltage gain $A = β (\frac{R _{o}}{R _{i}})$
$A = 50 \times (\frac{5000}{2000})$ ;
$A = 125 = \frac{v _{o u tp u t}}{V _{in p u t}}$ ;
$125 = \frac{V _{0}}{10 mV}$ ;
$V_{0} = 1.25 V$

Q. In a common emitter amplifier, using output resistance of 5000Ω and input resistance of 2000Ω , if the peak value of input signal voltage is 10mV and β=50 is given. Find peak value of output voltage -

5×10−6V

2.5×10−4V

1.25V

125V