Ouch! A shocking Wikihow article.

[Ian444]

Unbelievable. Even the math and the diode bridge is wrong. Then lets finish it up by pushing bare wires into a power socket...

https://www.wikihow.com/Convert-AC-to-DC

 

[Osvaldo de Banfield]

There are myriads of this stupidities in YT. Like those stupids that try to make I believe that I can do a voltage generator with a spark plug, a magnet and a piece of wire.

 

[Fast Eddie D]

That is irresponsible. And to make it even more dangerous, the people that would actually do this know nothing about electricity.

"a voltage generator with a spark plug, a magnet and a piece of wire." Ye of little faith.

 

[lcsaszar]

Then lets finish it up by pushing bare wires into a power socket...

https://www.wikihow.com/Convert-AC-to-DC

With the left hand, so you make sure current will flow through your heart.