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Analog circuits miscellaneous

  1. A OP-AMP has an offset voltage of 1m V and is ideal in all other respects. If this op-amp is used in the circuit shown in the figure, then output voltage will be (select nearest value)

    1. 1 mV
    2. 1 V
    3. ± 1 V
    4. 0 V
Correct Option: C

For the given op-amp, we have

Vo = Vos × gain =
1 × 10-3 × 106
= 1 V
103

It can be either positive or negative i.e. ± 1V. voltage follower



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