How Does a Dependent Voltage Source Physically Sense and Respond to Controlling Voltage?

Hi , well here I understand everything about the voltage relation source(Dependent sources)what's confusing me, theoretically I know how is it working , but I'm confused really how the dependent source knows at which part he will get the voltage from? I mean lets assume I have circuit "any electric circuit" , at branch k there's a voltage k, and my dependent source voltage is related to that voltage k, so what's confusing me how really the dependent source voltage knows  the voltage k at branch k? I mean lets assume I find the voltage k so my dependent source voltage theoretically knows the voltage k and he can supply then .. but physically how does really after there's a drop at branch k which is voltage k traverse to the dependent source voltage ?! is the voltage k magically traverse to the dependent source voltage to supply? theorotically we just say we have the value of voltage k then yeah the dependent source voltage can supply, but physically how does he knows the voltage at branch k(voltage k) ? is the voltage k after dropping at branch k immediately traverse to dependent source?!

Ryan you are making no sense again.  No diagram, no reference, so we have no idea what you are talking about.> so what's confusing me how really the dependent source voltage knows  the voltage k at branch k?The source voltage cannot "know" anything.  It is a battery (or something else) and has no knowledge of what is happening.> is the voltage k magically traverse to the dependent source voltage to supply?There's no magic here at all.  Electronics works according to physical laws - Ohm's law and others.  Two guys called Thévenin and Norton produced theorems a long time ago that assisted us to calculate voltages and currents in circuits. You HAVE to know these to understand electronics.If you don't know these subjects, yes it will seem like magic and you will confuse the hell out of yourself.  I suggest you start at the beginning and work your way through these tutorials, they start right from basics so you may be able to skip over a bit depending on what you already know, but from your questions that does not seem to be a lot, so take care to learn everything in these tutorials. They are on our Electronics Tutorials website:https://www.electronics-tutorials.ws/dccircuits/dcp_1.htmlAt the end is a list of all the tutorials in the series, so you can just click to go onto the next one.The tutorials progress through Ohms law and Kirchoff's and Thévenin's theorems and how you can use them to analyse circuits.  If you work through them in order and can grasp the contents of these tutorials, you will be well on your way to a good understanding of electronics.If you get stuck we will be pleased to help you, but please- Do not ask us about "Magic" and voltage sources "knowing" things.  They just follow the laws of physics.  Learn those laws.- Do not post questions like the above with no diagram and no reference, we will not have a clue what you are talking about.- If you are trying to work something out, show us what you have done so we may be able to see what you are doing wrong.I appreciate that your native language is probably not English and we can make allowances for that. However we cannot help you if you fire off questions like the above which make no sense.  I have thought for a long time that you are a troll (just trying to annoy us) but Max is not sure so I am giving you the benefit of the doubt.  Please prove us wrong.I repeat that a proper course in electronics will teach you subjects in order and stop you going off into areas where you have no idea what is going on (which seems to be the case above).  Also, you will be able to ask questions as they occur to you and not wait for an answer. If you really cannot do that, work through the tutorials above and only move onto the next one if you have completely understood the one you are working on.Please, help us to help you, or you will never grasp electronics.

Hi I understand you very much but once again I may didn't clear it up.I meant if we have a power supply (static)-the general one for example V1 then its voltage is V1 . what's confusing me is the "dependent voltage supply" I mean there's what's called dependent voltage supply which its voltage related to specific voltage on the branch of the circuit, So what's I'm asking is how that dependent source voltage is knowing/acquiring the voltage at the branch that he's related by? to clear more, assume there's voltage k at branch k, and at branch k+5 I put dependent source voltage which is related to the voltage at branch "k" ,, so how that dependent source voltage knows the voltage at branch k? 

Once again, lets assume I'm on the lab and I'm using dependent source voltage ! so how does he know the voltage at specific branch?! I mean if I use dependent source voltage which relates to specific branch's voltage, so how does dependent source voltage know the voltage at that specific branch?!

This is another great question to ask your teacher when you start an electronics course.

I think you mean "in the lab" as opposed to "on the lab" -- please don't go into a lab unless you are accompanied by a teacher or a professional engineer -- also, if you see a big red button with a "Do Not Press This Button" label... try to restrain yourself from pressing it.

I'm asking the question in another view:Is dependent source really a device like a battery or is just a model as we model transistor with dependent current source?

Ryan you still have not given us any diagram or maybe an internet reference of what you are trying to do and your question is still making no sense.

Ryan,A dependent source is just a model. It's not a separate device. Exactly like in the transistor model you mentioned, a dependent source is used in a model to make the overall behavior of a circuit easier to understand.

if it's a model, then there's no device in real life?!I mean what do you mean by model?! just getting from it a concept tho?! and not doing it in real life?
what do you mean please by term "model" ?! that's may my problem ...not understanding what do you mean by model.

> what do you mean please by term "model" ?! Ryan you have answered your own question:> Is dependent source really a device like a battery or is just a model as we model transistor with dependent current source?So you understand what a dependent current source is for a transistor, obviously.You must have been looking at something, somewhere, to get onto this topic, but you still refuse to give us any diagram or reference as to what you are looking at.You never respond to our suggestions of using the tutorial material on Electronics Tutorials.com (from me or anyone else). It's like you have not read what we've put.This reinforces my opinion that you are a troll, just trying to annoy us.  I for one will not be responding to you again and I would urge the rest of the experts to ignore you too.