Hi Gufran,
One electron has a charge of 1.6 ×10-^19C, i.e. 1.6 ×10-19C of charge is there in 1 electron.
1 C of charge is accomodated in 1/1.6 x 10-19 = 6.25 x 1018 which is roughly equal to 6 x 1018
Therefore, 6 x 1018 = 6108 electrons are there one coulomb of charge.
I hope this information helps you.
Good Luck!
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