The elementary charge, represented by the symbol "e," is the fundamental unit of electric charge. The magnitude of the elementary charge is approximately 1.602 x 10^(-19) coulombs.
To calculate the number of electrons constituting a certain amount of charge, you can divide the total charge by the magnitude of the elementary charge.
In this case, to find the number of electrons constituting 3 coulombs of charge, you would divide 3 coulombs by the magnitude of the elementary charge:
Number of electrons = (Total charge) / (Elementary charge) = 3 C / (1.602 x 10^(-19) C)
Calculating this division gives you approximately: Number of electrons ≈ 1.872 x 10^19 electrons
Therefore, approximately 1.872 x 10^19 electrons constitute 3 coulombs of charge.