COMEDK Exam 2014 Solved Paper

Voltage gain of first amplifier,
A1=10
Voltage gain of second amplifier,
A2=10
Input signal voltage,
Vi=0.01V
Total voltage gain, when two amplifiers are connected in series (cascaded), is given as
A=A1A2=10×20=200
We know that, voltage gain
A=

output‌voltage(Vo)

input‌voltage(Vi)

⇒ 200=

Vo

0.01

⇒ Vo=200×0.01=2V