Question

the charge on an electron is 1.6 ×10×-19 coulomb find the number of electrons that will flow per second to constitute a current of 2 ampere

Answer 1

Charge  = 1.6 x 10 ^-19 

Number of electrons constituting 1 C of charge 

n = Q/e = 1C/1.6 x 10^ -19 c = 6.25 x 10^18

Answer 2

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