SI unit of current is Ampere (A)

It is named after the French physicist and mathematician André-Marie Ampère, who made significant contributions to the field of electrodynamics. The ampere is a fundamental unit in the International System of Units (SI) and is used to measure the flow of electric charge in a circuit.

Electric current (I) is defined as the rate of flow of electric charge through a conductor. Mathematically, it is expressed as:

​I = Q/t

where:

• I is the electric current,
• Q is the electric charge flowing through a conductor,
• t is the time.

The ampere (A) is the SI unit of electric current. One ampere is equal to one coulomb of charge flowing in one second. The ampere measures the flow of electric charge across a surface at the rate of one coulomb per second.

1 A = 1 C/s