Suppose that I comb my hair. The plastic comb would become negatively charged and would attract small paper pieces.
But if I touch the comb in bare hand and in bare foot standing on the ground, or if I connect a copper wire with the comb into my floor, would the charges in the comb be neutralized? If not, how can be the comb be neutralized again?
It seems the charges will remain in the comb forever. Please explain, I am confused about this matter.
Another question: How can the charged comb attract small pieces of paper if they are neutral?