Purpose:Visualize electric current.
Parts:
- Wooden tray with nails in it
- Metal hanger to hold the tray
- Steel balls
Setup:
Attach one end of the tray to the hanger and place it as shown in picture 3, so that the tray will have some incline with table. Now release steal balls to the tray from the higher end and let them go through. This explains the concept of electric current and how the electrons/charges move with resistance.