5A10.20 • Producing Static Charge: Balloon Attraction
Location: Cabinet 1
Photo shows the demonstration used at the University of Texas at Austin
Photo shows the demonstration used at the University of Texas at Austin
Concepts Conveyed:
- As the negatively charged balloon approaches the electroscope, electrons in the metal plate will be repelled, causing a net positive charge on the plate. This induces a negative charge on the metal leaf, causing it to deflect. The closer the balloon gets, the more pronounced the deflection will be.
Instructions / Notes:
- Ensure the electroscope is discharged by thoroughly scrubbing the plate with the steel wool scrubber, and that the dynamic arm is hanging vertically.
- Rub a balloon against your hair for 5-10 seconds.
- Slowly bring the charged balloon near the dynamic arm of the electroscope without touching it to avoid discharging the balloon.
Last updated on March 31, 2025