Engine 2014: Electricity

1. A it further amplifies the voltage difference between the inverting input and the non- inverting input as amplified by the differential amplifier and produces a very low output impedance
2. B it amplifies the voltage difference between the positive and negative power supplies
3. C it further amplifies the voltage difference between the inverting input and the non- inverting input as amplified by the differential amplifier and produces a very low gain
4. D it further amplifies the voltage difference between the inverting input and the non- inverting input as amplified by the differential amplifier and produces a very high gain

Tip: press A-D to answer