per second. It can also be understood as the work done for passing one ampere of electric current through an electric circuit of external resistance equivalent
\Delta t} is the change in time The SI unit of electric current is the ampere (A). This is equal to one coulomb of charge in one second. Electric current
stored, it is measured in volt-amperes, or if it is stored (as in electric or magnetic fields), it is measured in volt-ampere reactive. Switch:the switch
based on 7 base units: the metre (length), kilogram (mass), second (time), ampere (electric current), kelvin (temperature), mole (quantity), and candela (brightness)