Count the charges crossing the golden ring. Current I = Q / t
Charge passed Q0 C
Time t0.0 s
Current I = Q / t0 A
Electrons per second0
I = Q / t 1 ampere means 1 coulomb of charge passes a cross-section every second.
Here each glowing ball stands for 1 C (really about 6.25 × 10¹⁸ electrons).
Electrons drift from − to +, but conventional current I is taken from + to −.
Kamran Afsar Khan · Professor of PhysicsElectric Current