"How many times have your heard that it's not the volts that'll kill you, but the amps? While mostly true (it takes only 100mA to stop your heart), amps and volts are eternally bound together by Ohm's Law:V = IR. In plain English: volts (V) equals current (I) times resistance (R). So, assuming resistance is constant, voltage and current are in lockstep. As one goes up, so does the other, and vice versa. You can't have a lot of amps without a lot of volts.
So, back to which kills you, the amps or volts. Given your body is a constant resistance, it really is a combination of both. Higher voltage means higher amperage, and thus higher voltage has more potential to kill. It takes only 100mA to stop your heart. I believe the resistance of a person with dry skin is somewhere around 100,000 ohms. This means, even touching 120V is far from lethal. The problem is wet skin is around 1,000 ohms, and the inside of your body is even lower, thus making 120V potentially lethal."-Google