All Questions
Tagged with kirchhoffs-laws dc
15 questions
1
vote
1
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84
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Calculating voltage drop
I’m currently refreshing my circuit analysis skills. What is the most efficient way to solve problems like this? I ended up using an iteration of the mesh loop method, which gave me the current for ...
- 11
0
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4
answers
187
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Analyzing a DC circuit
How would I analyze this DC circuit?
I need to find the nodes, the branches, and the loops. I need the equations describing the circuit based on Kirchoff's laws.
I determined that the circuit has 6 ...
- 81
4
votes
4
answers
408
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Calculations of mesh and nodal analysis of my dc circuit doesnt satisfy any of the KVL or KCL conditions
So I'm working on a course project under my professor and I seem to have encountered a huge problem.
I built my own circuit and solved it using mesh and nodal analysis in MATLAB, got some values but ...
- 145
0
votes
2
answers
316
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Mesh loop analysis 2 loops, 2 voltage sources of different polarity
I'm having problems trying to work the following problem. The polarity is reversed on the right hand loop so I guess it becomes a -7v however does the current now go clockwise in loop one and anti in ...
- 11
1
vote
3
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574
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How to do this nodal analysis problem with voltages sources plus a series resistance
I don't know what I am doing wrong, but it seems I got every number close to the answer but not the answer itself.
Here is the circuit:
For my first try I took the top node as V1 and the bottom as ...
- 33
0
votes
3
answers
339
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Adding ground to the minus of the source
I'm currently learning Kirchhoff's law and a circuit shown in the picture came up.
I had tested it in a circuit simulator and no current was shown to leak to the groud.
Could anyone explain what ...
- 5
0
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1
answer
456
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DC Circuit Analysis from Sergio Franco Book : Electric Circuit Fundamentals
If current source is absorbing power then the polarity wise Vb will be +ve.Then i calculated the value of Vb=4 x 2A = 8V
Va= Vb + (20*2) = 48V
and Vs = 164V
Thus for current source to absorb power of ...
- 259
0
votes
1
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749
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Cascading/multiple voltage dividers
Could someone explain the voltage readings on the following "oscilloscopes" of the simulated schematics below:
(I understand the concept of a voltage divider but it seems something less ...
- 493
0
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1
answer
103
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i don't understand the KVL solution to this question?
this is part of the solution of a previous exam and there are some things i don't understand about it
1- why did he assume the value of current at the 12
Ohm resistor to be 0.5A without any ...
0
votes
1
answer
109
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Applying KVL to DC bias calculation
I'm trying to use Kirchhoff's voltage law to find the bias point of a bjt amplifier circuit, as shown below:
I begin with switching off the signal and opening all capacitors
simulate this circuit &...
- 173
6
votes
5
answers
10k
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Why are these independent loops?
According to my textbook, abca with 2 ohm resistor is independent. A second loop with 3 ohm resistor and the current source is independent. The third loop, with 2 ohm resistor in parallel with 3 ohm ...
- 389
3
votes
1
answer
72
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Circuits problem
simulate this circuit – Schematic created using CircuitLab
My question is what's the voltage between C and D?
R7=1kΩ
Vc-Vd = (Vc-Vb)/1000 + (Vb-Va)/1000 + (Va-Vd)/1000 = ¿Vc-Vd/1000? I'...
- 39
4
votes
4
answers
4k
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Finding current using Kirchoff Law, but getting unsolvable system
Hello, the original circuit above is where I am trying to find I1, and I simplify it the figure below and assuming the following current directions.
Using Kirchoff ...
- 143
0
votes
2
answers
822
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Nodal Analysis of a Circuit
I'm trying to apply Nodal Analysis here.I have found that taking reference Nodes and application of Kirchhoff's laws yields some equations and on solving these equations i will get the needed result....
- 203
2
votes
4
answers
4k
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Superposition theorem
I'm trying to apply the superposition theorem.
I'm confused how the value of \$I_2\$ is calculated, from where does the value of 1 come?
- 203