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asd852
- 12
- 2
- Homework Statement
- Provided we have a branch between node c and d and Vd>Vc,Is it possible to have certain node (denoted by "m") in the branch whose voltage Vm is bigger than Vd??
- Relevant Equations
- KCL,KVL
Wowie. I've read the last part of your question about 5 times, and still cannot parse it. In any case, if your question is whether voltage drops need to be unidirectional when there are no power sources in the middle, then yes.asd852 said:Homework Statement:: Provided we have a branch between node c and d and Vd>Vc,Is it possible to have certain node (denoted by "m") in the branch whose voltage Vm is bigger than Vd??
Relevant Equations:: KCL,KVL
View attachment 273740originally ,I want to prove (TT:current can only flow from c to d),thus I try to figure out what will happen if Vd >Vc,then I label corresponding current direction.Afterwards,I know what's wrong: (A:current doesn't flow out of d ),then I attempted to prove A ,yet I consider that A might not be right when there is a node "m" whose voltage is bigger than Vd,how could I prove "A" as well as "TT"?Plus,whats the equivalent circuit for between node A and node B
hAhA THANKS.I have a few questions:Merlin3189 said:Take a simpler example for a start, say this:
View attachment 273848
now if M > D > C or M > C > D
then current will flow from M to both C and D. So current would flow out of M but not into it !
The voltage in any part of a passive branch cannot be higher than the voltage at its highest voltage terminal, because current would then have to flow from it towards both terminals.
asd852 said:hAhA THANKS.I have a few questions:
1.What software have you used for redrawing the circuit? MS Paint (part of Windows 10) It's not great, but it does enough.
2.In what case could we define current as flowing into M,could we define the current as that when it flow from both C and D to M Doesn't matter how you define it: I say it goes from positive to negative.
The point here is Kirchhoff's idea: the net flow of current into any node must be zero. You can't have significant accumulation nor depletion of charge in a wire or node. So if a branch has current flowing into one terminal node, it must have an equal current flowing out the other terminal node.
3.Is the equivalent circuit for orginal AB terminal circuit a few paralle branches? Yes
Voltage restriction for nodes on the same branch refers to the maximum voltage that can be applied to a group of nodes connected in series on the same branch of an electrical circuit. This restriction is important to ensure the safety and proper functioning of the circuit.
Voltage restriction is necessary to prevent overloading and potential damage to the circuit components. It also helps to maintain a stable voltage level throughout the circuit.
The voltage restriction for nodes on the same branch is determined by the voltage rating of the circuit components, such as resistors, capacitors, and diodes. The maximum voltage that each component can withstand without malfunctioning or getting damaged is taken into consideration when determining the overall voltage restriction.
If the voltage restriction for nodes on the same branch is exceeded, it can lead to overheating and failure of the circuit components. It can also cause a short circuit, which can result in damage to the entire circuit or even cause a fire hazard.
In general, the voltage restriction for nodes on the same branch cannot be increased without risking damage to the circuit. However, in some cases, it may be possible to increase the voltage restriction by using components with higher voltage ratings or by adding additional components in parallel to share the voltage load.