# Why is the charge of a proton positive? [duplicate]

Is there a reason that a proton has a positive charge while an electron has a negative charge? Are these just names that were given to the charges or was there a reason for making a proton have a positive charge?

• Positive and negative are just conventions. What is not a convention however is that electrons and protons have charges of opposite sign so that $q_{\text{electron}} q_{\text{proton}}<0$. – Omar Nagib Oct 6 '15 at 13:25
• As a word of warning: while everybody agrees that the charge of the electron is negative, there is no agreement over whether the electron has charge $e$ (with $e<0$) or charge $-e$ with $e>0$. – Jonas Greitemann Oct 6 '15 at 13:28
• Possible duplicate of Who (and Why) started the "electrons are negative, protons are positive" convention? – John Rennie Oct 6 '15 at 13:55

• Electrons are also made of multiples of quarks of magnitude $\frac{2}{3}$e and $\frac{1}{3}$e . But these quarks do not exist in nature. The electron does as a whole. Re-consider your point. – SchrodingersCat Oct 6 '15 at 14:01