what are the advantages and disadvantages of negative feedback?
['The negative feedback reduces noise.', 'It has highly stabilized gain.', 'It can control step response of amplifier.', 'It has less harmonic distortion.', 'It has less amplitude distortion.', 'It has less phase distortion.', 'Input and output impedances can be modified as desired.', 'It can increase or decrease output impedances.']