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Byju's Answer
Standard XII
Physics
Error and Uncertainty
When the nega...
Question
When the negative feedback is applied to an amplifier of gain
50
, the gain after feedback falls to
25
. Calculate the feedback ratio.
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Solution
Given data:
A
=
50
;
A
f
=
25
Solution:
Voltage gain after feedback
A
f
=
A
1
+
A
β
25
=
50
1
+
50
β
Hence, the feedback ratio
b
=
0.02
.
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