Question

-) The current flowing through a conductor
in an electrical circuit is 10 ampere.
Calculate the number of electrons
passing through it per second. The charge
on an electron is 1.6x10-19 coulomb.​

Answer 1

Answer:

Explanation:

Given that

Charge (Q) = 1 C

Electron (e) = 1.6× 10^-19

Number of electron (n) = ?

Q= ne

1 C = n × 1.6×10^-19 C

n = 1/(1.6×10^-19)

n = 6.25 × 10^18 electron

Answer 2

Answer:

The current flowing through a conductor  in an electrical circuit is 10 ampere, the number of electrons  passing through it per second will be $6.25\times 10^{19}$ electrons

Explanation:

• In the question, it is given that,

      Time,   $t= 1 s$

      Current,  $I = 10A$  

      Charge of 1 electron,  $e = 1.6\times 10^{-19}C$

• Consider a conductor of current flowing I, Q be the total charge of electrons and t be the time.

       Then, we have the expression for current as,

       $I=\frac{Q}{t}$  

      That is,

       $Q = It$            ...(1)

       Here Q is given by the expression,

       $Q = ne$  

       Or

       $n= \frac{Q}{e}$             ...(2)

       Where e is the charge of one electron and n is the number of electrons.

• Substitute the values given in the question into equation (1)

      $Q = (10\times 1 )= 10C$

      Then equation(2) becomes,

      $n= \frac{10}{1.6\times 10^-19}= 6.25\times 10^{19}$ electrons