It is true that it seems very strange that a phone in charge can cause an electrocution: after all, the charger, which is a transformer (or more exactly an AC adapter) hardly delivers only 5V of tension for 1 to 1, 5A of intensity.In addition, when you directly touch the male plug (the one you are inserted into the phone) with the connected charger, you do not necessarily electrocute.How can a non-reverse audience imagine that the simple fact of leaving his phone in charge and making him fall into his bath can cause an electrocution with a current that we imagine weak?

Strangely, there are very few explanations really rational to this paradox.Most of the items speak of a loss of insulation between the charger and us, due to water, but that does not explain too much how we find ourselves to run away with the 5V/1.5A which should a prioriGet out of the catch and enter the phone: the truly dangerous part of the charger should be that is connected, dry, in the sector, and not the one that is submerged in water.

And no matter how much I find, I can't find anyone, no article, who explains how the electrocution occurs with the simple fact of immersing your phone in charge.I find mainly articles that warn of danger, without really explaining it, or in an abstract explanation.

A fairly plausible first explanation that I found on the principle that the water reduced our resistance to electricity and therefore lowers the threshold from which a tension can be dangerous.It's interesting, but I did not find other sources of information that would confirm this point.

Another more convincing explanation comes from Michel Chevalier: he explains that a phone himself delivers a current by his USB port, and that the fact of taking charge of a module which makes him stop deliver this current.When the phone in charge is immersed in the water, this grid module, and the phone starts to deliver the current, which leaves for the AC adapter, which in turn grills.No longer fulfilling its function as a transformer, it no longer delivers a 5V current, but the domestic 220V.Which causes electrocution.

Well, I have neither the desire nor the audacity to sacrifice a phone, a charger and my electrical installation to verify the explanation of Michel Chevalier, but it seems to me sufficiently plausible and concrete.