- Current :
(symbolized with an I) represents the amount of electrical charge ๐Q(or dQ)
crossing a cross-sectional area per unit time, which is given by
I=๐Q / ๐T=dQ/dt.
The unit of current is called the ampere (abbreviated ampor A)
and is equal to one coulomb per second.
1 A = 1C/s
Electric currents typically are carried by electrons.Each electron carries a charge oh -e ,which equals
-e=-1.6*10-19C
