Amperage is the strength of a current of electricity expressed in amperes. The ampere or amp is the standard unit of electric current.
The formula for Amps is Watts divided by Volts. (Amps = Watts/Volts) typically written as I = P ÷ E.
Voltage and amperage are two measures of electrical current or flow of electrons. Voltage is a measure of the pressure that allows electrons to flow. Amperage is a measure of the volume of electrons.
As an example, 60 Watts divided by 12 Volts equals 5 Amps. 60 Watts/12 Volts = 5 Amps