- #1
himanshushanka
- 5
- 0
Please suggest what does N1 and N2 mean in the attached dc network.
Understanding N1 and N2 in DC Network: A Comprehensive Guide
Click For Summary
Discussion Overview
The discussion revolves around the interpretation of N1 and N2 in a DC network circuit diagram. Participants explore their meanings and implications within the context of applying Kirchhoff's Current Law (KCL) and the behavior of currents in the network.
Discussion Character
- Debate/contested
- Technical explanation
Main Points Raised
- Some participants suggest that N1 and N2 denote nodes in the circuit and propose applying KCL to analyze them.
- Others argue that without additional information, the designations of N1 and N2 are meaningless.
- One participant points out that if the upper and lower corners of the bridge are shorted, it implies a current flow of 1A, but questions how this affects the rest of the circuit.
- Another participant expresses confusion regarding the assumption of a short circuit, noting that if the voltage is non-zero, the bridge must be resistively loaded, yet no external resistors are shown.
- A different perspective suggests that N1 and N2 could represent supernodes, indicating that they are independent networks with connections that require further deduction of currents.
Areas of Agreement / Disagreement
Participants express differing views on the meanings and implications of N1 and N2, with no consensus reached on their significance or the correct approach to analyze the circuit.
Contextual Notes
There are unresolved assumptions regarding the circuit configuration, particularly concerning the presence of external resistors and the implications of shorting nodes.
- #2
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As far as I can tell, it is utterly meaningless without further information.
- #3
the_emi_guy
- 766
- 79
I believe they simply denote nodes. Apply KCL to them.
- #4
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the_emi_guy said:
That makes no sense. They have different currents going in/out but nothing to show how that affects the rest of the circuit.
- #5
the_emi_guy
- 766
- 79
phinds said:
The problem is essentially indicating that if the upper and lower corners of the bridge are shorted, we will get 1A flowing from the upper to the lower corner. This is possible since the bridge includes a power source. Just apply KCL to each of the nodes, N1 must have 1A arriving from bridge, N2 must have 1A returning to bridge.
- #6
the_emi_guy
- 766
- 79
@phinds
You know what, this does make no sense. If it is assuming a short between upper and lower corners, then the voltage in question would be zero.
If we assume that the voltage is non-zero, and we can see that there is 1A of external current associated with it, this means that the bridge is resistively loaded. But there is no resistor external to the bridge shown, only node numbers.
Stupid problem.
You know what, this does make no sense. If it is assuming a short between upper and lower corners, then the voltage in question would be zero.
If we assume that the voltage is non-zero, and we can see that there is 1A of external current associated with it, this means that the bridge is resistively loaded. But there is no resistor external to the bridge shown, only node numbers.
Stupid problem.
- #7
NascentOxygen
Staff Emeritus
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I'm flummoxed, too.himanshushanka said:
- #8
gneill
Mentor
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How about: N1 and N2 represent supernodes; we don't know what's inside each, but they are independent networks with three outside connections each. The currents between the two are shown, leaving us to deduce the remaining currents...
- #9
CWatters
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Seems reasonable.
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