Electric Circuit Analysis, Nodal Analysis and finding Voltage.

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SUMMARY

The discussion centers on Electric Circuit Analysis, specifically Nodal Analysis and the calculation of voltage in two circuits. In the first circuit, Nodal Analysis yields V1=4.8V, while in the second circuit, V1=10V due to the application of Kirchhoff's Current Law (KCL), resulting in the equation 10+V1=0. The confusion arose from the presence of a supernode in the second circuit, which was initially misunderstood by the participant as a current source branch. Ultimately, the participant clarified their misunderstanding regarding the voltage source.

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  • Familiarity with Kirchhoff's Current Law (KCL)
  • Basic knowledge of voltage and current sources
  • Concept of supernodes in circuit analysis
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Summary:: The image shows two circuits, in the first one, using Nodal Analysis we find that V1=4.8V, but in the second circuit V1=10 because using KCL - 10+V1=0. I understand what happened in the first circuit, but I don't understand what happened in the second one, they look the same to me except for the existence of a supernode in the second one, which I don't think it should affect it in that way?

Not sure if this is the right forum to post in but this is not HW help since I already know the answer.

IMG_20210409_002055.png

If I apply nodal analysis on the second circuit shouldn't I get a different result for V1?
 
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Which part is confusing you?
 
Joshy said:
Which part is confusing you?
Wait. I actually feel very stupid right now, I got the whole question wrong, I kept seeing the 10V voltage source branch as a current source branch, and got confused, but I got it now.
 

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