>>13742508Well electricity is the study of the 'motion' of electrons (or charge) through objects. Since it happens at a subatomic scale we have to use metaphors to put it into terms we can understand.
Voltage is like pressure, or potential - high voltage means the electrons are more likely to just jump out and charge something else, low voltage means it's difficult. Materials with low conductivity require higher voltage to get zapped. Human beings have fairly low conductivity, it takes about 40-50 volts to reliably electrocute us.
Amperage is volume, basically - how fat is the pipe? Narrower wires don't support as much amperage and will overheat due to resistance, too many electrons trying to go through.
Wattage is a measure of total energy or work done by the electricity, and is calculated with Volts x Amps (this actually gives you VA or volt-amps but it's close). A 60 watt light bulb in a 120V socket has a 0.5 amp filament in it.
Yes, stun guns have high voltage, which is dangerous, but the amperage is ridiculously low. The 9V batteries that power them simply don't have enough total energy to really fuck you up the way household current does.