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I am a little confused by the Princeton Review definition of a Coulomb on page 289 of the Physical Sciences book
It says: Coulomb, The SI unit of electric charge, abbreviation C, the fundamental electric charge ( the charge on a proton or the magnitude of the charge on an electron) is defined to be e=1.6x10^-19. Therefore, one coulomb is equal to the total charge on 6.25x10^18 protons
I don't understand the part in bold, because I thought that Coulombs always refer to charge on electrons. Why are they talking about protons now?
Thanks in advance
It says: Coulomb, The SI unit of electric charge, abbreviation C, the fundamental electric charge ( the charge on a proton or the magnitude of the charge on an electron) is defined to be e=1.6x10^-19. Therefore, one coulomb is equal to the total charge on 6.25x10^18 protons
I don't understand the part in bold, because I thought that Coulombs always refer to charge on electrons. Why are they talking about protons now?
Thanks in advance
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