An amplifier of gain 1000 has a gain-change of 20 % due to temperature variation. If a negative feed-back of 0.1 is introduced into the above amplifier, the change in gain of the feedback amplifier due to the temperature variation would be
A. 0.01 %
B. 0.2 %
C. 5 %
D. 7.5 %
Answer:B
An amplifier of gain 1000 has a gain-change of 20 % due to temperature variation. If a negative feed-back of 0.1 is introduced into the above amplifier, the change in gain of the feedback amplifier due to the temperature variation would be
A. 0.01 % B. 0.2 % C. 5 % D. 7.5 %