Let’s start with charge. Charge is measured in coulombs, 1 coulomb has electrons.
Charge of 1 electron: Qe = coulomb.
Charge is carried by negative electrons and/or positive protons. In a solid, the current is carried by electrons.
Current: is the rate of charge flow.
Current (I) = OR I =
1 Ampere =
1 A =
Amp =