(3) (a) Non-invorting amplifier:" gain, "xy=55The gain of the non-inverting auplifier is{:[G=1+(Rf)/(R_(i))],[=>G=1+(Rf)/(R_(i))=55],[(Rf)/(R_(i))=54]:}the standard resistor values with %5 tolerance which can suit to get the gain 54 by their ratio are15 Omega and 820 Omegalets take R_(i)=15 Omega epsiR_(f)=820 OmegaThe circuit is(b)Due to virtual ground concept,V_(N)=0 (positive terminal is grounded)KCL at Node V_(N) :{:[ ... See the full answer