Chapter 14, Problem 14.4TYU

An operational amplifier connected in a noninverting configuration hasan open−loop gain of $A_{OL}={10}^5$ . The resistors are $R_2=495\text{k}\Omega$ and $R_1=5\text{k}\Omega$ .(a) Determine the actual and ideal closed−loop gains. (b) if the open−loop gain decreases by 10 percent, determine the percent change in closed−loop gain and the actualclosed−loop gain. (Ans. (a) $A_{CL}=99.90$ , $A_{CL}\left(\infty \right)=100$ (b) 0.01 %, $A_{CL}=99.89$ )