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Originally Posted by TSchlum  Great to see some science around here for a change!
Another way to look at it is: RMS represents the AREA under the wave. That is, the POWER of the signal.
Voltage is only the poster child of the current. The current is doing the work. |
Over a given impedance (ac) or resistance (dc), voltage and current are directly related. voltage = current * resistance. If you double the current, the voltage doubles, if you half the current, the the voltage halves.
I guess you could say the current is doing the work as its the amount of actual electrons passing a point in given (1 coulomb per second). Where as voltage is the force behind the electrons.