I'd have thought it was "ampage" if anything, but google seems to think amperage is a sensible term to use instead. Surely you mean available current though?
A
voltage is an electrical potential, as in charge at 10V has the potential to give up energy when moving to 0V. "Potential difference" is a less misleading phrase, as voltage is always considered relative to an arbitrary "ground". 12 volts means 12 above whatever you've currently decided ground is. So voltage is how much energy is available in a given "unit of electricity."
This "unit of electricity" is a
Coulomb, it's defined to be a certain number of electrons where electrons are quantified. Doesn't really matter, it's a number. You have a coulomb of charge much like you have a kilo of mass. Now current is how fast this charge is moving, an
Ampere is a Coulomb of charge passing in one second. Amperes, abbreviated amps or A, is a measure of how many electrons are moving along the wire per unit time.
So voltage is how much energy the electrons have got, current is how many are moving through your wire. Processors don't much like either btw, and will take damage from excess voltage and from excess current.
