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i'm not so good in labelling nodes, any1 can help me?

Physics
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am i correct if i label this 2 nodes? |dw:1342199670805:dw|
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Yes, Sir. Perfectly right. Those are the only relevant nodes you have because the third one is is ground and for that we know V=0
oh kk. sometimes im not so sure which to read, very confusing. erm the current source I2 is not a supernode right?

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Other answers:

I never heard about the concept of supernode, can you explain?
omg i think its not supernode. its supermesh. anyway, supernode exists when an ideal voltage source appears between any 2 nodes, while supermesh is when an ideal current source appears between 2 meshes.
First time I hear that. Thanks for explaining. Can you settle the equations for resolution or you need help?
i'll try up 1st. lol. 2mr having test
lol actually its today since its midnight now
I'll send you the solution for you to compare if you want
owh k thx alot =)
i got my Va = -2.55V, Vb = 4.03V so if the question asked for voltages across each resistive element, the question is asking for the voltages across all the resistors?
There it goes
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Voltages accross the resistors are Va for R1, Va-Vb for R3 and R4 and Vb for R2 and R5
Good luck with your test
wow thx alot. your working is much shorter.
Same concept as by meshes but using voltages and the inverse of the resistance (conductance)

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