Ampere vs. Microampere

A unit of electrical current, the standard base unit in the International System of Units; colloquially amp. Abbreviation: amp, Symbol: A

Example: ‘Definition: The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602’; ‘x 10−19 when expressed in the unit C, which is equal to A’; ‘s, where the second is defined in terms of ΔνCs. ([https://www.bipm.org/en/si-base-units/ampere The International Bureau of Weights and Measures])’;

The unit of electric current; - defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international ampère.

a former unit of electric current (slightly smaller than the SI ampere)

the basic unit of electric current adopted under the Systeme International d'Unites;

Example: ‘a typical household circuit carries 15 to 50 amps’;

The ampere (, US: ; symbol: A), 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 electromagnetism.

One millionth ( 10-6 ) of an ampere.

One of the smaller measures of electrical currents; the millionth part of one ampère.