11.1 A negative-feedback amplifier has a closed-loop gain Af = 100 and an open-loop gain A = 104. Find the values of the amount of feedback, the loop gain, and the feedback factor β. If a manufacturing error results in a reduction in A of 10%, what closed-loop gain results? What is the percentage change in Af corresponding to this 10% reduction in A? Repeat for the case A changes to 103. 100; 99; 9.9 × 10‒3 ; 99.89; 0.11%; 91.7; 8.3%