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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 already have all the values for the resistors, current source, and voltage source, and the resistor between V5 and V4 is called R7, I just forgot to label it. Maybe someone has an idea of what I have missed in the nodal analysis.

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Marcus Müller
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Håkan Mjölk
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  • Your diagram is pretty small and a bit messy. I think you may have mixed up V5 and V6 on occasion. Also, why do you have V1 and V6 at all? – Elliot Alderson Nov 25 '20 at 20:20
  • Echoing Elliots comment, V6 and V1 are 0. It's where you have put your ground reference. So try again with that simplification. – Aaron Nov 25 '20 at 20:30
  • Yes, I know, well when I did my calculations I assumed that V6= 0 and V1=0 already and it's still an issue. I had added V1 and V6 just for clarification for the nodal analysis, even though it doesn't have any impact. – Håkan Mjölk Nov 25 '20 at 20:44
  • Wait, I think I found the issue actually, on V2 I have (V2-V6)/R4, which is not possiable – Håkan Mjölk Nov 25 '20 at 20:45

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