Question

Consider an inverting amplifier circuit designed using an op amp and two resistors, R1 = 10 kΩ and R2 = 1 MΩ. If the op amp is specified to have an input bias current of 100 nA and an input offset current of 10 nA, find the output dc offset voltage resulting.

(a) 0.1 mV

(b) 1 mV

(c) 10 mV

(d) 100 mV

I have been asked this question in an internship interview.

I would like to ask this question from DC Imperfections in Operational Amplifiers in section Operational Amplifiers of Electronic Devices & Circuits

Answer 1

The correct answer is (d) 100 mV

Best explanation: Use the mathematical definition of bias current and offset current.