Physics · Electronics
In an amplifier with a negative feedback circuit, the closed-loop gain Af is given by which of the following formulas (where A is the open-loop gain and β is the feedback factor)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Af = A1 + Aβ✓
- 2Af = A1 - Aβ
- 3Af = 1 - AβA
- 4Af = 1 + AβA
Correct answer
Af = A1 + Aβ
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