If a current of 2 A flows through a cross section for 5 seconds, what is the number of electrons that have passed through the cross section?
Answer & explanation
Correct answer: option 2
I = Ne/t
N = tI/e
I = 2 A ; t = 5 s ; e = 1.6 x 10-19 C
N = 0.625 x 1020