Electric Current
When there is a possible difference between the two points in the conductive medium, the electrical charge flows from the high potential point to the lower potential point to balance the charge distribution between the points. In relation to time, the rate of flow of charge is known as electric current.
Formula

If q coulomb electrical charges are transferred between these two points in time, then the current can be calculated
In differential forms, the Current can be represented in this form
Current unit
As current is the proportion of the transfer charge to the time taken for this charge transfer, we can say that one unit current is a rate of charge transfer in which one Coulomb charge is transferred from one point to another in one second. Therefore, the current unit is coulomb / second and it is known as ampere after the great physicist Andrew Marie Ampere. This is the SI unit of electric current.