Negative feedback is often used in amplifiers incorporating an operational amplifier (op-amp). State
what is meant by negative feedback,
two effects of negative feedback on the gain of an amplifier.
An ideal op-amp is incorporated into the amplifier circuit shown in the figure below.
Calculate the gain G of the amplifier circuit.
Determine the output potential difference 
for input potential differences 
of
to the inverting input.
.
.
.
