## edr1c 3 years ago i'm not so good in labelling nodes, any1 can help me?

1. edr1c

am i correct if i label this 2 nodes? |dw:1342199670805:dw|

2. CarlosGP

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

3. edr1c

oh kk. sometimes im not so sure which to read, very confusing. erm the current source I2 is not a supernode right?

4. CarlosGP

I never heard about the concept of supernode, can you explain?

5. edr1c

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.

6. CarlosGP

First time I hear that. Thanks for explaining. Can you settle the equations for resolution or you need help?

7. edr1c

i'll try up 1st. lol. 2mr having test

8. edr1c

lol actually its today since its midnight now

9. CarlosGP

I'll send you the solution for you to compare if you want

10. edr1c

owh k thx alot =)

11. edr1c

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?

12. CarlosGP

There it goes

13. CarlosGP

Voltages accross the resistors are Va for R1, Va-Vb for R3 and R4 and Vb for R2 and R5

14. CarlosGP

15. edr1c

wow thx alot. your working is much shorter.

16. CarlosGP

Same concept as by meshes but using voltages and the inverse of the resistance (conductance)