Question

if the charge of an electron is 1.6*10 to the power -19C how many electrons should pass through a conductor in one second to constitute 2 ampere current

Answer 1

q=ne and i =q/t
so
i=ne/t
and n=it/e
n=2×1/1.6×10ki power -19
n=12.5×10ki power18
or
n=1.25×10ki power 19