Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [nodal-analysis]

A circuit analysis method in which Kirchhoff's circuit laws are used to determine the voltage between all nodes (points where circuit elements connect) and the current through all elements. Always use in conjunction with the "circuit-analysis" tag.

A circuit analysis method in which Kirchhoff's circuit laws are used to determine the voltage between all nodes (points where circuit elements connect) and the current through all elements.

Always use in conjunction with the tag.

201 questions
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Why do I read 20 microamperes instead of 5?

I am trying to do this experiment, but I can't read the current Ib. Note that the multimeter I use in this experiment is very sensitive. I don't know much about BJT transistors, so it might be an invalid transistor connection.
bleckemr
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How to find V1 and V2 using Nodal Analysis?

I would like to use Nodal Analysis to find the power absorbed by 2 Ω resistor, V1, V2, and V3. For V3, it clearly shows that it is -24V. I would like to ask is V1 the same as Vy, or they are different values?
Bryson Fernades
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Nodal analysis for dependent voltage source

I want to apply nodal analysis at the red marked node of the above circuit. Here is my equation : $$0.2v_0 - i_0 - 5 + \frac{v_3}{40} + \frac{v_3 - v_2}{10} = 0$$ My equation includes a supernode formed due to the dependent voltage source $$4v_0$$…
Nehal Samee
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How do I apply nodal analysis to this circuit?

Looking at the diagram below, I see the formation of a supernode that is different from the ones I've encountered before and I really don't know how to go about it. How can nodal analysis be used to solve this circuit?
Jovanny
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Nodal analysis with current dependent voltage source

V2= 4Ix + V1 (1) V1 Node V1/6 + V1-V3/12 + V2/2 + V2-V3/3 =0 (2) V3 Node 1 + V2-V3/3 + V1-V3/12 = 0 (3) I can get this three equation by text book, but I can't understand equation (1). Can anyone explain how can I get equation (1)?
Paul C
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Nodal Analysis Q

Hello, I'm studying Electrical Engineering, but I'm confused about nodal analysis. How to find all nodal voltages and the current through the 4 Ω resistore?Please someone help me to understand this question.
Paul C
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Need some help with nodal analysis

I have this circuit where I'm supposed to find the current I. I know I'll find it by (V3-V4)/R10. I have done the nodal analysis, however, my teacher says that I have done my nodal analysis incorrectly, but I can't figure out what the problem is. I…
Håkan Mjölk
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How do I calculate the K for the dependant source using nodal analysis?

The question has provided power supplied by the voltage source and Vab = -3.6 V. I had tried several ways but still can't solve it. Below is the solving steps I tried:
Bryan Soh
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Supernodes in Series

I have this problem 3.32 from Fundamentals of Electric Circuits 6th edition by Alenxander and Sadiku. I have drawn the circuit in LTspice. My goal is to solve this problem using nodal analysis and supernodes. I am not sure how to handle have two…
devdev
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Nodal voltage analysis logic

I'm doing nodal voltage analysis on a circuit (zoomed in and cut out all but the relevant part in the picture), and ran into a situation I have no clue how to tackle. I don't understand how to figure out the equation for the current from V2 toward…
iegbg
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Nodal analysis: confusing solution

I encountered this problem in the book 'Fundamentals of Electric Circuits,' and I am confused about the approach that was used to solve it. This is the circuit and the solution of the book. Circuit: Solution: The thing that confuses me is why I3…
spinachpizza_
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Node voltage method with dependent current source

Can anyone help me to solve this circuit using node voltage method? Because in the solution, I don't understand why there is just 3I1 only.
Jin En Ng
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Use the node-voltage method to find the power developed by the 20V source in the circuit

All the information of the circuit elements are shown below. Question : Use the node-voltage method to find the power developed by the 20V source in the circuit.
Electronics00
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Electrical Circuits Analysis Help

Am I correct? Or does D= V1-20, which allows the value of V1 to be positive?
soph
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Node voltage equation, is it right?

I have this scheme. I have calculated the resistance of coil and capacitors. This is the source: And here are my equations about the upper node(U1). Are they right?
Simeon Simeonov
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