(Solved): a. (12 marks) For the op amp circuit shown in Figure 5 , i. (5 marks) Calcula ...

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a. (12 marks) For the op amp circuit shown in Figure 5 , i. (5 marks) Calculate \( i_{0} \) if \( R_{f}=6 \mathrm{k} \Omega \). ii. (7 marks) Calculate the value of the feedback resistor \( R_{f} \) if it is adjusted until the op amp reaches negative saturation. Figure 5