Question

Four identical metallic objects carry the following charges: + 1.6, + 6.2, − 4.8, and . The objects are brought simultaneously into contact, so that each touches the others. Then they are separated, (a) What is the final charge on each object? (b) How many electrons (or protons) make up the final charge on each object?

Answer 1

Since they conduct, they will attain the same electric potential after they touch. Since they are alike, they will each have the same charge to produce that potential. Figure out what that charge is. Divide than by "e", the electron charge, for the number of electrons or protons. Since it will be postive, there will be extra protons.