(Solved): An ideal op-amp circuit with feedback resistors \( R_{E L}=R_{F 2}=100 \mathrm{k} \Omega \), input ...

An ideal op-amp circuit with feedback resistors \( R_{E L}=R_{F 2}=100 \mathrm{k} \Omega \), input resistor \( R_{a}=10 \mathrm{k} \Omega \) and load resistor \( R_{L}=5 \mathrm{k} \Omega \) is shown in Figure Q1. The input DC voltage is given as \( V_{i n}=10 \sin \omega t \mathrm{~V} \). (i) Is it an inverting or non-inverting op-amp? Explain your answer. [ 2 marks \( ] \) (ii) Show that \( V_{\text {out }} \) is expressed as: \[ V_{o u t}=-\left(\frac{R_{F 1} \times R_{F 2}}{R_{F 1}+R_{F 2}}\right) \frac{V_{i n}}{R_{a}} \] (iif) Determine the output voltage \( V_{\text {out }} \) and current \( I_{\text {out }} \). [5 marks] (dy) Calculate the voltage gain for this op-amp. [ 2 marks \( ] \) [ 2 marks] (1) Can a small value of \( R_{L} \) use in this op-amp? Justify your answer. (fi) Determine the current \( I_{F 1}, I_{F 2} \) and \( I_{R a} \). [3 marks (vii) Suggest a usage for this op-amp if \( R_{F I}=R_{F 2}=2 R_{a} \). [4 marks] [2 marks]