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On Tue, 06 Apr 2010 17:25:22 -0500, wrote:

What comes from a car's ignition coil? I got knocked on my ass from
that a few times. Damn that hurts !!!!

In excess of 60,000 volts AC

Don't believe that you cannot receive a really painful and/or injurious shock
from a car battery. It depends upon your resistance (are you full of
perspiration at the time you receive the shock or is your skin entirely intact
and dry). Car batteries can deliver a really nasty high amperage shock if the
resistance in the shock path is low and you can get really nasty burns from the
heat that can be generated.

Guess I have been lucky. I never have felt a thing from touching a
live 12v wire in a car.

It takes an extremely unlikely set of circumstances to lower the
resistance of the body enough to let a 12 volt battery pass much
current through that body. Basically it will involve mucous membranes
or extreme saturation.

12 volts AC will give you a "tingle" long before you will feel DC and
you can get a tingle on your toungue from a half dead 9 volt
battery

The damage from a shock is related to the energy (watts) delivered which is the
product of the voltage and the current. The lower the resistance, the higher
the current (given a constant voltage).

Actually it is strictly the CURRENT - but it takes voltage to push
that current, and if the resistance is low enough that 2 volts can
cause the lethal current to flow, 2 volts COULD kill you.

I'm not saying there is a likely scenario where 2 volts could cause
that current to flow - it's all Ohm's Law.

If the resistance is high enough that it takes 90 volts to force a
lethal current through the body, 50 volts might be painfull, but
wouldn't kill.