Repulsion between Charged Objects.

Effects of force between charged objects.

• When you inflate two balloons and rub them against hair or wool, they become electrically charged. They gain the same charges.

• Like charges repel each other and therefore when the balloons are hanged and moved close to each other, they move apart. This is called repulsion.

• After a while, the charged particles vanish gradually. The balloons are no longer charged and they move closer.

Demonstrating Repulsion between charged objects.

• To demonstrate repulsion between charged objects, Styrofoam plates are rubbed at the base with piece of cloth.

• The plates are placed on a flat surface and their bases moved closer to each other.

• The Styrofoam plate gains negative charges from the cloth and becomes

• negatively charged. The Styrofoam plates move apart. They repel each other. This is called repulsion.