What is the SI unit used to measure electric current?

The SI unit of electric current is the ampere (A).

One ampere is defined as the amount of current when one coulomb of electric charge flows through a conductor in one second.
Mathematically:
1 A = 1 C / 1 s

Electric current is measured using an ammeter, which is connected in series in a circuit.

The ampere is a fundamental unit in physics and is essential for quantifying and analyzing electrical circuits.