Question

Differentiate between positive charge and negative charge.

Answer 1

There's not much to say here. Nothing "generates" the charges of particles; charge is merely a property of particles which, in the standard model, is fundamental and not explained in terms of anything else. Charge is a number, and the difference between positive and negative charges is the sign of this number (trivial, but true). Note that there is a symmetry between positive and negative charge in the following sense: if we all agreed from now on to call negative charge positive, and positive charge negative, nothing would change, and all our calculations would still work. There are two groups of charges. Charges from the same group will repel each other, and charges from different groups will attract each other. But which group we call "negative" and which group we call "positive" is a matter of convention

Nobody has yet defined the actual meaning of a charge, or why a negative charge is different from a positive charge.

1. Everybody knows that positive charge is due to protons and negative charge is due to electrons, but what does the charge mean?

2. Why were negative and positive charges so designated?

3. Was it also a possibility to call the charge of an electron positive and the charge of a proton negative?