AP Physics C/Electric Charge

Fundamentals of Electric Charge Intrinsic to fundamental particles 2 types: positive (+), negative (-) Positive - Lack of electrons Negative - More electrons No charge = Neutral Same charges repel: + and + or - and - Opposite charges attract: + and - Coulomb (C): Measurement of the amount of electric charge (similar to moles in chemistry) Atomic Particle Mass Charge Neutron 1.675 * 10−27 kg 0 C Proton 1.673 * 10−27 kg 1.602 * 10−19 C Electron 9.11 * 10−31 kg -1.602 * 10−19 C Atomic Notation A = Atomic mass = # protons + # neutrons Z = Atomic Number = # protons E = element symbol (like U for Uranium)