Van De Graff

In class we played with a Van De Graff generator, what the generator did was cause electricity. We tested it put with a ball which would keep moving away form the generator. This happened beacuse the ball and generator had the same charges. Then we turned the generator off and put aluminum plates on top once we plugged the generator back in the plates went flying off one by one. This happens because the aluminum plates had the same charges. Obejets repel when they have the same charges like positive and postive or negative and negative the attract when they have opposite charges like negative and positive.