Question

A current of 1.6mA flows through a conductor.If charge on electron is -1.6.10^-19 coulmb find the number of electron that will pass each second through the cross section of that conductor

Answer 1

Hi friend,
Given,
I=1.6mA=>1.6×1000A
Q=1.6×10^-19
T=1s

We know that,


I=Q/T. [Q=me]
I=ne/t

N=IT/e
1.6×10^3×1/1.6×10^-19

:-n=10^22 electrons...


Hope this helps you...
Please mark it as brainliest answer...☺☺☺

Answer 2

Current(I)=charge(Q)/time(t)

In question, it is given that current is 1.6mA I.e 1.6*10^-3A

As it is asking about number of electrons per second that is charge flowing per second that is Current.

And we know Q=ne

So, I=Q/t
1.6*10^-3=1.6*10-19n/t
-> n/t(electrons per second)= 10^16.
So 10^16 electrons will pass through the cross section per second.
Hope it helps.