GATE EC 2015 Set 1 — Question 50
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.NAT+2 / -0MediumIdeal & Non-Ideal Op-AmpOp-Amp CircuitsAnalog Circuits
Analog Circuits → Op-Amp Circuits → Ideal & Non-Ideal Op-Amp
Last updated
Question
In the circuit shown (the opamp's non-inverting input is held at ), assume that the opamp is ideal. The bridge output voltage (in mV) for is ______.
Correct answer
249 to 251
Solution
The opamp forces its inverting input to . That node has to ground, so the current through it isNo current enters the opamp input, so these flow from the opamp output through the top , the bridge and the bottom .Each bridge branch has total resistance , so the current splits equally: per branch.Measured from the bottom node of the bridge:
- left node ( terminal):
- right node ( terminal):
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE EC question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Op-Amp Circuits
2026 Set 1 Q17The ideal OP-AMP circuit shown in the Figure produces output voltage when the Switch, S,…2026 Set 1 Q18Consider the circuit shown in the Figure with and . Assume…2026 Set 1 Q50A small signal source, is applied to a BJT circuit as…2026 Set 1 Q53A circuit using an ideal OP-AMP is shown in the Figure. Which of the following options gives the…2026 Set 1 Q60An -channel MOSFET is connected as shown in the Figure. Assume ,…