Many of the answers here are grossly irresponsible. DO NOT under any circumstances deliberately come into contact with AC line voltage! No, NOT "unless you know what you're doing".
Just DO NOT. A shock from a 120 volt outlet can *absolutely* kill you, if the current happens to pass through your heart. For example, if you touch a "hot" terminal or wire with a finger of one hand and the "neutral" terminal with a finger of the other hand.
Or if your other hand, or something on that part of your body, is in reasonably good contact with even a pretty poor ground. Say, an ordinarily porous concrete floor, laid on earth. Even some types of floor tiles can conduct lethal levels of current.
It's happened. That is, people have died from contact with 120VAC. Why do you think GFCI outlets are now required near sinks, concrete floors, etc.? It is true that touching, say, the thumb and forefinger *of the same hand* to live and neutral will not produce current flow through your heart.
Are you going to chance this? Are you going to guarantee that you don't happen to touch the live terminal first, and that some other part of your body isn't touching a sufficient ground at the time? Remember, you lose literally everything if you're wrong.
Yes, I know - I've seen electricians test for live circuits this way. I think they're crazy. A test lamp is completely safe and costs a dollar or two.
The danger is compounded by the fact that 60 Hz AC is close enough to the muscle trigger frequency to cause muscle spasms and contractions. That's why it can fibrillate or stop your heart, but it can contract other muscles too. For example, people have died when they grabbed the metal handle of an electric tool that had somehow become live - and then couldn't let go.
A fleeting contact would probably have been ok, but... In circs where such might happen, a lot of us get in the habit of just barely touching things with the BACK of our hands first, before actually gripping the item. That way the muscle contraction will take you AWAY from the point of contact. It only takes 100 milliamps AT MOST of 60 Hz AC to induce heart fibrillations, and some sources say it can take as little as 20 ma.
Death is then not quite instantaneous - it may take a few minutes while your brain and the rest of your body are starved of oxygen because your heart isn't pumping. Your heart will probably not resume normal beating on its own even if contact with the electricity is broken. Better hope there's an IED nearby.
Very high current through your body can cause interior burns, too. Another way electricity can kill you is if the current happens to pass through your lower trunk - say, from left hand to left waist or foot - and paralyze your diaphragm. Now you can't breathe.
Even though your heart may still be working, you suffocate. DC is safer in that it takes many times as much direct current as 50 or 60 Hz AC to have such effects. It is also safer in that, unless you work on vacuum tube radios or TV sets, there aren't a lot of sources of dangerous-voltage DC around.
Low voltage AC or DC is not dangerous in terms of electric shock. It is absolutely safe, for example, to touch the terminals of a car battery with the palms of your two hands. 12 volts is just not enough to force dangerous levels of current through your body.
Even a 220 watt (high voltage) outlet wouldn't kill you. It may just burn the skin and knock you back. But being shocked is the most repulsive feeling in the world.
So the answer is Life expectancy minus your age.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.