Question

A current of 10A exists in a conductor. Assuming that this current is entirely due to the flow of electrons (a) find the number of electrons crossing the area of cross section per second, (b) if such a current is maintained for one hour, find the net flow of charge.​

Answer 1

Explanation:

a) charge = no of electrons × charge of electron.

current = C/T

10A = C/3600

Charge= 36000 C

charge = n × 1.6 × 10^-19

36000 × 10^-19 / 1.6

n = 225× 10^-22

Answer 2

Answer:

(a) we know that,

Q=IT

and, Q=nE

therefore,

nE=IT

n=IT/E

WHERE

n=no. of electrons

I= current

T=time

and,E= charge on electron

n= 10A×1S / 1.6×10^-19 C

= 6.25×10^19

thanks.