Electronics > Beginners
Why some people died in their bath after smartphone dropped into water ?
tigrou:
There is several cases (reported by media) of people dying after their smartphone (while being charged) dropped into the bath and electrocuted them.
AFAIK most USB chargers deliver max. 5V, which is non lethal.
Because of ohm's law, you need a much higher DC voltage than that to get enough current flowing trough your body and killing you.
So I don't understand how it is possible.
The possible explanations I see are :
- they get killed not because their phone dropped into the water, but because the charger itself dropped into water (eg: not plugged into socket directly but plugged into an extension coord).
- the human body resistance is considerably lower while in the water, making 5V (and enough amps) dangerous.
- under some conditions, some chargers (eg : counterfeit ones with improper isolation) will deliver more than 5V.
- lithium battery capable of delivering high voltage when dropped into water while being charged.
BravoV:
--- Quote from: tigrou on January 27, 2020, 09:29:36 am ---... possible explanations I see are :
...
--- End quote ---
You missed this one too ...
The phone plunged into the bath-tube, either connected or NOT connected to the charger (doesn't matter), and the owner panicked and did some jerk movements, as bath room is wet & slippery, and then fell down and got knocked in the head unconsciously, and drowned in the bath tube. :-DD
thinkfat:
I suggest watching bigclive on YT tearing down cheap USB wall warts for an explanation.
iMo:
The most people die from heart attack when they realize their lovely smartphone dropped in the water :)
Gyro:
All the theories and explanations you could want...
https://www.eevblog.com/forum/chat/hugo-14-electrocuted-in-his-bath-because-of-his-mobile-phone-!/
https://www.eevblog.com/forum/chat/man-dies-charging-phone-in-the-bath/
https://www.eevblog.com/forum/chat/another-tragedy-cellphone-chargers-and-bathtubs-don_t-mix/
https://www.eevblog.com/forum/chat/teen-dead-after-rolling-on-to-iphone-cable-in-her-sleep/
https://www.eevblog.com/forum/chat/is-this-really-likely/
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