5A10.10 - Rods and Fur or Silk with Hanger
Show that there are two types of charges, positive and negative, and demonstrate the effect of charges upon one another.
With a rod hanger mounted to a bench rod assembly, choose a rod and hold it by the taped end. Charge one rod and set it in the hanger. Charge a second rod to show that like rods repel and different rods attract each other. Make sure to hold the rods parallel to each other for maximum demonstration effect. The Teflon rod is charged negatively with the fur cloth. The Nylon rod is charged positively with the silk cloth. The Nylon rod takes more effort to charge than the Teflon rod.