How is the difference voltage calculated in closed loop non-inverting amplifier?
(a) Vid= Vo – Vf
(b) Vid= Vin – Vf
(c) Vid= Vo – Vin
(d) Vid= Vf – Vin
This question was addressed to me in an interview for job.
Query is from Voltage Series Feedback Amplifier topic in portion Operational Amplifier Characteristics of Linear Integrated Circuits