Here is my two cents on ohms law (voltage, amperage, resistance)...
Voltage: As has been previously stated voltage is the force (or pressure) 
that pushes electrons through a conductor (a piece of wire).
Amperage: 
(short story): Electrons flowing through a wire.
(long story): If you were to take a huge microscope and focus it on a single
point on a wire and watch the electrons go by after so many electrons have
passed this point (per second) (the number is in the billions) this is 
considered one amp (one ampere).
Resistance: The natural resistance occuring within a normal conductor
(copper wire) that resists the flow of electrons, as electrons over come
this resistance they cause friction (and therefore heat) within the wire.
So to get to the point: Voltage is pushing all of these electrons out of the
coil through the coil wire, through the distributor, down the spark plug
wire through the spark plug and then finally jumping the gap and creating
that cute little purple spark that sets off the gasoline in the cylendar.
Further more it will take the path of least resistance and will not jump
both "prongs" of a Split Fire plug at the same time. Another thing, if you
have an old spark plug wire that is sitting to close to the engine block
the spark will jump out the side of the wire and will never make it to the
spark plug.
Anyway, enough of my ramblings.
--- Blue Wave v2.12 [NR]
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