what happens when plastic is charged by rubbing it with a cloth?

why is a PC monitor usually covered in dust?

why does a piece of copper not get charged when it is rubbed with a cloth?

When a piece of plastic becomes positively charged it has?
a) gained protons
b) lost electrons
c) gained electrons

when a piece of plastic becomes negatively charged it has?
a) gained electrons
b) lost electrons
c) lost protons

what happens when two polythene rods with the same charge are brought near each other?

when you walk across a nylon carpet, you become negatively charged. when you touch a metal handle, why do you receive a shock?

atoms that have become charged are.
a) electrons
b) ions
c) protons