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Manmipt2018-10-23 11:05:51
Physics
Manmipt, 2018-10-23 11:05:51

How does the current understand that it needs to be divided along the conductor, where is the parallel connection of resistors?

How does the current understand that it needs to properly divide on a circuit where there are two or more resistors, so that the voltages in all resistive sections will be the same? It flows for the first time, at the moment when we connected the power, I understand, if at the first moment it would pass the circuit, and understand the resistivity, I'm talking about the flow of electrons, maybe I don't understand something, can you explain?

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3 answer(s)
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x67, 2018-10-23
@Manmipt

Potential difference and conductivity.
Imagine a huge metal cube the size of a planet. Somewhere inside at one point, a thousand neutrinos suddenly explode, forming electrons. The potential of this place will change and the current will equally flow there from all sides, or rather, the electrons will begin to scatter from there in all directions. If suddenly there is a dielectric bubble, then only a small part of the electrons can get inside it, because. conductivity will be low. But all the same, if there are a lot of them, at least one electron will get there and a tiny current will flow through the "dielectric".
This is very simplistic, since not only electrons are charge carriers
For two conductors, you can draw an analogy with water - take a sponge and make 2 holes, supply water - most of the water will go through the holes, but there will also be water inside the sponge. Here are 2 wires - 2 pipes, and everything around is a very dense sponge for electrons. And on each tiny segment, the direction and force with which the electron moves will be determined by the potential difference. He sees that it is empty nearby, and next to him there are 10 more electric shocks, so he slips into an empty place. And 5 more electric boxes with it. Then he sees that there is still a place and again there.
This is if very simplified.

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Moskus, 2018-10-23
@Moskus

Have you taken any illegal drugs there? What else "current understands"?
The electric field, damn it, is distributed in the conductors when the conductors are connected to a power source. according to their properties. And already because of the field, free electrons begin to move (that is, current flows).

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Saboteur, 2018-10-23
@saboteur_kiev

Learn the physics and properties of current.
Do you have the phrase "He's leaking for the first time", does the word leak mean anything to you?
If you have a water supply, and there is a splitter, then how will the water under pressure understand that it needs to "leak" into both splitters? No way, it just goes under pressure to where there is less resistance. It is difficult for it to flow into the wall, but it is easy in the direction in the pipes.
Current behaves similarly to water—it flows wherever resistance allows it to flow.

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