Question: what is the difference between an elementary charge and one coulomb?
Answer: An elementary charge is the electrical charge carried by a single electron . This is equivalent, but opposite in polarity , to the electrical charge carried by a proton . ... One coulomb (1 C) is equal to approximately 6.24 x 10 18 elementary charges. Thus, an elementary charge is approximately 1.60 x 10 -19 C.