∴ Gain = Vo/Vin = [1+(RF/R1)] = 1+R/R =1+1=2. 9. Find the output voltage and the load current for the circuit given below. Assume that the op-amp is initially nulled V1 =2.5v
A. IL=0.42mA, Vo =10v
B. IL=0.42mA, Vo =3.4v
C. IL=0.42mA, Vo =6.1v
D. IL=0.42mA, Vo =5v
Answer:A
∴ Gain = Vo/Vin = [1+(RF/R1)] = 1+R/R =1+1=2. 9. Find the output voltage and the load current for the circuit given below. Assume that the op-amp is initially nulled V1 =2.5v
A. IL=0.42mA, Vo =10v B. IL=0.42mA, Vo =3.4v C. IL=0.42mA, Vo =6.1v D. IL=0.42mA, Vo =5v
Explanation: The load current IL =vin /R =5/12kΩ =0.42mA