Question

Calculate the number of electrons constituting one coulomb of charge.

Answer 1

charge of 1 electron = 1.6 x 10^-19 C
so,
    electrons needed to produce 1C charge=1/1.6 x 10^-19 
                                                                   = 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