The voltage gain of an amplifier with `9%` negative feedback is `10`. The voltage gain without feedback will beA. 1.25B. 100C. 90D. 10

The voltage gain of an amplifier with `9%` negative feedback is `10`.

1.	The voltage gain of an amplifier with `9%` negative feedback is `10`. The voltage gain without feedback will beA. 1.25B. 100C. 90D. 10
Answer» Correct Answer - B `"Voltage gain"=(A_(V))/(1+beta.A_(V)),` where `beta=(9)/(100)=0.09`, voltage gain = 10 `rArr" "10=(A_(V))/(1+(9)/(100).A_(V))` `rArr A_(V)=(10)/(0.1)=100`

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The voltage gain of an amplifier with `9%` negative feedback is `10`. The voltage gain without feedback will beA. 1.25B. 100C. 90D. 10

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