Question

What is the charge on a proton?

Answer 1

The charge of a proton is `+1.602xx10^(−19)` `"Coulombs"`.

Explanation:

And of course the charge on a proton is equal and opposite to the charge on an electron, `-1.602xx10^(−19)` `"C"`.

Note that the sign convention is quite arbitrary. We could equally define the charge as `-1.602xx10^(−19)` `"C"` provided we reversed the sign of the electronic charge. The point is that protons and electrons have `"opposite"` charge.