Question

If 5 coulombs of charge flows through a conductor In 2 seconds, then the number of electrons flowing through a conductor in one second approximately is



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Answer 1

Answer:

• n=q/e=2.5/1.6×10^-19=15×10^18

Answer 2

Given:

• 5 Coulomb of charge flows through a conductor in 2 seconds.

To find:

• Number of electrons passing in 1 second?

Calculation:

In 2 seconds, 5 C charge flows,

So in 1 second, the charge flown is 5/2 = 2.5 C.

Now, the number of electrons flowing in this time will be :

$no. \: of \: electrons = \dfrac{q}{e}$

$\implies no. \: of \: electrons = \dfrac{2.5}{1.6 \times {10}^{ - 19} }$

$\implies no. \: of \: electrons = 1.5625 \times {10}^{19}$

So, number of electrons flown in one second is 1.5625 × 10¹⁹.