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Circuits - Node analysis of connected and dependent sources

  • Thread starter Rectifier
  • Start date
  • #1
Rectifier
Gold Member
313
4
Hey!
I have a problem with the theory side of this circuit here:
1. The problem
I know that you are supposed to pick the buttom node of the circuit to represent your significant node at which you shouldnt construct a series of equations. But what if I picked another node as my significant node and I would come to this node and have to draw the current leaving the node. It is pretty clear for the whole circuit but the problem I see is that there is that line that connects these two sub-circuits and I don't know how it behaves.

Homework Equations


qD9bLfm.png



3. The attempt
My thought are that the current can't "come back for refueling" if it would go throught that pass. I have to little knowledge about this situation to say anything.

Can anyone please help me with this issue?
 

Answers and Replies

  • #2
gneill
Mentor
20,799
2,777
Hey!
I have a problem with the theory side of this circuit here:
1. The problem
I know that you are supposed to pick the buttom node of the circuit to represent your significant node at which you shouldnt construct a series of equations. But what if I picked another node as my significant node and I would come to this node and have to draw the current leaving the node. It is pretty clear for the whole circuit but the problem I see is that there is that line that connects these two sub-circuits and I don't know how it behaves.

Homework Equations


qD9bLfm.png



3. The attempt
My thought are that the current can't "come back for refueling" if it would go throught that pass. I have to little knowledge about this situation to say anything.

Can anyone please help me with this issue?
Your intuition is correct. Current flow requires a circuit (a closed loop). So that wire segment joining the two sub-circuits carries no current. You can remove it if you wish; the two sub-circuits interact via the controlled source parameters.
 

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