GATE EC 2021 Set 1 — Question 29
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Analog Circuits → Op-Amp Circuits → Ideal & Non-Ideal Op-Amp
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Question
Consider the circuit shown in the figure.
The value of (rounded off to one decimal place) is ________ V.
Correct answer
1 to 1
Solution
For an ideal OPAMP with negative feedback, the virtual short principle applies: .
From the circuit, the non-inverting terminal voltage is determined by a voltage divider: .
Thus, .
Applying nodal analysis at the inverting terminal node:
Substituting :
V.
By performing nodal analysis at the remaining nodes and considering the current sources, the output voltage is found to be V.
From the circuit, the non-inverting terminal voltage is determined by a voltage divider: .
Thus, .
Applying nodal analysis at the inverting terminal node:
Substituting :
V.
By performing nodal analysis at the remaining nodes and considering the current sources, the output voltage is found to be V.
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