PIRA: 5A20.20

Summary of the Demo

Demonstrates like charges repel each other.

Equipment List

  • Pith Balls coated with conducting materials.

Set-up Instructions

  •   Hang pith balls side by side, touching

Demonstration instructions

  •   Rub down plastic rod with fur.
  •   Carefully slide charged rod over one of the pith bass to transfer as much charge as possible.
  •   Since pith ball surfces are conducting and in contact with each other, charge will spread out uniformly over both surfaces, and in turn repel each other.