Static Electricity

A charge sandbox — drag, charge, and watch Coulomb's law play out.

Choose Your Assistant
0.0 m
6p+ 9e− 6n
−3
6p+ 3e− 6n
+3

Yellow Balloon

Neutrons6
Net charge−3

Red Balloon

Neutrons6
Net charge+3

Set the charges, then press Start. Drag a balloon anytime to reposition it.

  • Opposite charges attract — they accelerate together.
  • Like charges repel — they fly apart, then settle.
  • Charge bleeds to the environment until neutral.
Coulomb’s Law
F = k · |q₁ · q₂| r2 = 8.99e9 · |q₁q₂| r2 = 0 N
awaiting start q₁ = 0 e  ·  q₂ = 0 e  ·  r = 0.0 m