The number of electrons present in 1 coulomb is equal to

The SI unit of electric charge is coulomb (C).

It is equivalent to the charge contained in nearly 6 × 1018 electrons.

$Q=ne$ 

$1=n\times 1.6\times {10}^{-19}$

$n=\frac{1}{1.6\times {10}^{-19}}=6.25\times {10}^{18}$