Question

Explain plain how a piece of Styrofoam get charged when it is rubbed with a piece of paper

Answer 1

When you rub Styrofoam with paper, some negative charges from the paper travel to the Styrofoam . Thus, the Styrofoam piece has an excess of negative charges, or it acquires a net negative charge. The paper which loses negative charges, has an excess of positive charges or it acquires a net positive charge