Perhaps the human electrical specialty is difficult to imagine a more simple question than "a current in the socket."You can answer without even thinking, as to explain does not necessarily use the formula (although they clarify some points).But even if the surface to view some of the forums on the Internet, it becomes clear that some people do not understand what the current in the socket.For example, sometimes there is a statement that a light bulb even when the circuit breaker can not be touched, because it remains tense.These people remember that in school physics teacher compared the current water themselves do the same.Although in this case the train of thought is true, but it must take into account some of the nuances, otherwise the logical chain is broken.
First, let's define what is an electric current?For example, we use a few very simplified models, but they are enough to understand.So, imagine a thin metal wire, is exactly the same as the failed to the home electricity meter.If we had the opportunity to see a microcosm, its internal structure is to chain nodes atoms - crystal lattice.Between nodes move free electrons, balancing between the forces of attraction and repulsion.Just two of these copper wires are connected to the two contacts each household outlet.Then they reach for power transmission lines to the transformer, and then again on the poles and eventually reach the power plant.This is where you can get the first answer to the question "how much current in the socket."It is a variable.The generators on the wires to strong magnetic field.It creates the effect as if buoyed by the electrons move through the wire.The move not only begin to free particles, but also by atoms come off more, for a total creates a very dense flow.Move the particles collide with each other, like a baton, transferring energy and momentum.In the interval between the power plant and domestic socket can be different devices, one way or another affecting the movement.From the generator out just three wires, each of which is a current, so we can talk about a three-phase system.This solution more efficiently.Many known that the current in a single phase outlet.That is, in the factory house is only one phase (although there are exceptions).The second wire - a mass land.It is here that the electrons tend - for an end to "impose" their movement and rest.
So what is current in the wall socket?It has become clear that variable and single-phase.But this is only a theory.Sometimes a person interested in the practical side of the issue, that is, I want to know what the current in the socket.Typically, people pay attention to this in the event that the socket or burns out just to pick up a new installation.That's on them and said current.
In fact, this question is incorrect.On the one hand, the current strength is sufficient to create an electric arc welding, and the other - by charging low power outlet mobile phone.So what is it current?Perhaps it makes sense to draw an analogy with the water system.Tell me, what kind of pressure of water from household taps?Open and read the regulations - 6 atmospheres.But such pressure even afraid to wash your hands - try Refrain!That's because we can adjust the amount of water by closing the tap.In other words, six atmospheres - is the limit determined by some technical specifications.The same applies to electricity.Only analogue crane is the internal resistance of the appliance plugged in.
