Charges

There are two different types of charges, positive and negative. Then, of course, there is the neutral charge. According to the Coulomb's Law or the Charge Force Law, like charges repel against each other while unlike charges attract. Meaning a positive and positive or a negative and a negative would repel against each other, but a positive and a negative will attract. For a neutral, however, both positive and negative charges are attracted to a neutral charge. A positive charge comes from having more protons than electrons and the opposite of that for a negative charge. And like momentum, charge is conserved as well. In physics, charges are represented by the letter "e". A proton having the charge of +e and a electron having the charge of -e.