This category of measurement units is defined by the "electric current" type, which is an SI base quantity.

The SI base unit for electric current is the ampere.

In physics, the ampere (symbol: A, often informally abbreviated to amp) is the SI base unit used to measure electrical currents. The present definition, adopted by the 9th CGPM in 1948 is: "one ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in vacuum, would produce between these conductors a force equal to 2 × 10^{-7} newton per metre of length".

abampere

ampere

attoampere

biot

centiampere

coulomb/second

deciampere

dekaampere

electromagnetic unit of current

electrostatic unit of current

franklin/second

gaussian electric current

gigaampere

gilbert

hectoampere

kiloampere

megaampere

microampere

milliampere

nanoampere

picoampere

siemens volt

statampere

teraampere

volt/ohm

watt/volt

weber/henry