Acurrent of 0.92 a flows in a wire. how many electrons are flowing past any point in the wire per second? the charge on one electron is 1.60 ✕ 10-19 c.

The current is defined as the ratio between the charge Q flowing through a certain point of a wire and the time interval, :

First we need to find the net charge flowing at a certain point of the wire in one second, . Using I=0.92 A and re-arranging the previous equation, we find


Now we know that each electron carries a charge of , so if we divide the charge Q flowing in the wire by the charge of one electron, we find the number of electron flowing in one second: