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Homework Statement
http://imageshack.us/a/img713/9389/homeworkprobsg23.jpg Determine node voltages for the circuit
Homework Equations
V = IR,
KCL
Supernode equations
The Attempt at a Solution
I am sorry to say that There is a LOT of stuff in this problem I still need help with, like how/ when to apply supernodes.
Is it true that where you see a ground node, then they do NOT want you to put supernode there? Or can you really put it anywhere with a voltage / current source? The only equation for this problem I know for sure to make out at this point is
Va - Vc = 10VPutting the supernodes like this:
http://imageshack.us/a/img94/5332/homeworkprobsg23edit.jpg I think I would get (with both currents in the middle going towards B, if I can set it that way):
5A - 2A = (Va - Vb)/10Ω
and then
5A - 2A = (Vc - Vb)/40ΩI do not know if this is right at all though.Sorry if I should know this well already too, but can a current from another source (ie from the 5A and 2A) pass freely through a wire with a voltage source (ie 10V and 12V)? Thank you.
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