Amperes (A): Ampere is a unit measurement of current of electrical energy equal to one coulomb of charge per second. Most DC applications refer to positive current - current which flows from a positive potential to a more negative potential, with respect to a reference point which is designated as zero or neutral potential (usually ground). The electrons in a circuit flow in the opposite direction as the current itself. Ampere is commonly abbreviated as 'amp', not to be confused with amplifiers, of course, which are also commonly abbreviated 'amp'. In computation, the abbreviation for amperes is commonly, 'I'.

 

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