Physics
OpenStudy (anonymous):

10^9 electrons pass through a conductor from poin A to B in one millisecond.find the value of current and its direction.

OpenStudy (jamesj):

The units of current is Ampere are by definition 1 Ampere = 1 Coloumb / 1 second So you need to convert the two quantities you have into Coloumb and seconds and calculate. Hint: the charge on an electron is $$e=1.6 \times 10^{−19}$$ Coloumb.