Operational Amplifiers

Q1:
The input voltage must be ______ in the given circuit to obtain the given output voltage.

A 343 mV

B 400 mV

C 480 mV

D 600 mV

ANS:B - 400 mV

V0= (Ri/Rf)Vin.
= (10/60)2.4,
= 0.4,
= 0.4*1000,
= 400mV.

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