Describe what you understand by offset voltage, Electrical Engineering

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a. Describe what you understand by 'offset voltage' and 'offset current' of op-amp. Discuss with a neat circuit diagram the method used for minimizing offset voltage and offset current in an inverting amplifier. (10)

b. Measure the output voltage 'V0' for the following non-inverting op-amp summer with V1 =2V and V2 = -1V

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