Question

is ampere not an si unit?

Answer 1

The ampere symbol: often shortened to "amp", is the base unit of electric current in the International System of Units (SI).It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics.

Answer 2

1.The ampere is a base unit, defined as whatever current through a pair of wires leads to a certain magnetic force between the wires.
2.The ampère (symbol A) is the SI base unit for the physical quantity electric current.