Define 1 Coulomb??
Coulomb is the S.I unit of charge.
Charge is denoted by the letter "Q"
Q = ne where is 'n' is the number of electeons and 'e' is the charge of one electron
For 1 Coulomb,
n = 6.25 * 10^18 (Electrons consitituting in a 1 Coulomb of charge)
e = 1.6 * 10^ -19 (Charge of one electrons)
In statement ,coulomb is defined as
One coulumb is said to be when an object holds a charge of 6.25 * 10^18 electrons.
NOTE: I have used * as the mulsiplication symbo and ^ as power symbol(exponent)
The coulomb (symbol: C) is the SI derived unit of electric charge. It is defined as the charge transported by a steady current of one ampere in one second: