by phil scott <phil@[EMAIL PROTECTED]
>
Mar 5, 2008 at 11:13 PM
On Mar 5, 1:36=A0pm, Roader857 <stonechi...@[EMAIL PROTECTED]
> wrote:
> Which is more dangerous exposed leads in a 500 W power supply or a 12
> V automotive =A0battery? and Why?
volts x amps =3D watts
amps is a specific number of electrons flowiing past a pont per
second. look it up. maybe a million or so per amp. per second.
Voltage is the force behind them.
Watts is the numer of electrons x force behind them
resistance impedes the flow.... the higher the resistance the less
flow/
there are formulas for all this..... look up Ohms law.
re your question.... 500 watts if its a 110 volt power supply has the
voltage force to drive current through your body that a 12 volt car
battery will not have..... the resistance of the body is large enough
to preclude lethal current flow
additionally the battery is a limited source... the 110v connects to
yer local power grid...as long as the current doenst exceed the
protective device range it can fry your ass limitlessly..... the
battery does not have that kind of reserve...it exhausts iself/
however tiny batterys have killed peiople by triggering heart
arythmia. a differnt sort of situation.
Phil Scott
