https://www.physics.ohio-state.edu/~p616/safety/fatal_current.html
I researched this method a while ago and decided against it. You have to find and apply the correct current, which involves a huge amount of randomness/variability, and it seems very, very painful if you aren't knocked out. Your flesh cooks while you're still alive before your heart stops, so you might as well set yourself on fire with gasoline and jump off a cliff and save yourself the preparation.
There also seems to be quite a bit of protection on things to prevent you from accidentally electrocuting yourself, and it seems like most of the deaths with electronic appliances and bathtubs are freak accidents.
Overall, there's just too much work for this to be a viable method unless you are somebody that works with dangerous high-voltage electronics on a regular basis.
I could be wrong about these things though, I'm definitely not somebody that knows much about how electricity works.