3. An amplifier has a voltage gain of 500 without feedback. If a negative feedback is applied, the gain is reduced to 100. Calculate the fraction of the output fed back. If, due
to ageing of components, the
gain without feedback falls by 20%, calculate the
percentage fall in gain with feedback.
[8marks]

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.

It is the areas with lines. this may sound a little confusing, but i hope it !