A) 2V
B) 3V
C) 4V
D) 5V
Correct Answer: A
Solution :
The given, \[{{A}_{1}}=10,\,{{A}_{2}}=20\] \[{{V}_{i}}=0.001\] \[{{V}_{0}}=?\] Total voltage gain, \[{{A}_{v}}={{A}_{1}}\times {{A}_{2}}\] \[=10\times 20=200\] We know that, Voltage gain \[{{A}_{v}}=\frac{Output\text{ }voltage\,\,\text{(}{{V}_{0}})}{Input\text{ }signal\text{ }voltage\,\,({{V}_{i}})}\] Output voltage \[\text{(}{{V}_{0}})={{A}_{v}}\times {{V}_{i}}\] \[=200\times 0.01=2\,V\]
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