Question

how many electrons constitute one coulomb of charge

Answer 1

0.625×10^19 elections are in 1 coloumb

Answer 2

$q = ne \: from \: charge \: quantisation \\ and \: here \: q \: = 1 \\ n = x \\ and \: e = 1.6 \times {10}^{ - 19} \\ then \: n \: = \frac{q}{e} \\ i.e \: n \: = \frac{1}{1.6 \times {10}^{ - 19} } \\ n = 6.25 \times {10}^{ -20}$