It’s called the “outlet challenge.” Participants insert the plug part of a phone-charger cord only part of the way in, then try to produce a spark by touching a penny to the exposed prongs.
The challenge has been linked to scorchings of outlets in Holden and Plymouth as well as a fire at Westford Academy, where one student is facing criminal charges, Boston’s WBZ-TV reported. Officials are also warning of the possibility of death by electrocution.
I took several courses called “Power and Grounding” during my career, safety around electrical equipment and circuits was always included. One point that was made very clear was how little current was needed to kill a person. As the fragment from a safety handbook shows, a tenth of an Amp is all that needed. There are fifteen hundred times that much current in the common wall socket. Having been “bitten” by electricity a few times I can confirm that, yes, it will hurt!
|“In general, for limb-contact electrical shocks, accepted rules of thumb are: 1-5 mA is the level of perception; 10 mA is the level where pain is sensed; at 100 mA severe muscular contraction occurs, and at 100-300 mA electrocution occurs.”||0.1–0.3 A|