Question

How many electron passes through a wire in 1min the current passing through the wire is 200mA?

Answer 1

Given :

I = 200mA = 0.2A

time = 1min = 60 sec

using the formula I=Q/t;

0.2= Q/60

Q= 0.2×60

=12C

using the formula Q=no.of electrons × 1.6×10^-19C;

12= n× 1.6×10^-19

n = 7.5×10^19 electrons

therefore the number of electrons passing through the wire is 7.5×10^19

HOPE THIS HELPED U!!