Discover how rubbing creates electric
charge and attraction
Wool Sweater
Wall
🎮 Controls
⚡
Balloon Charge
0
Neutral
🧲
Attraction Force
None
💡
What's Happening?
Drag the balloon to the sweater
to charge it by rubbing!
👆
Drag the balloon!
📚 Understanding Static Electricity
⚛️
Atoms & Charges
Everything is made of atoms with protons (+), neutrons, and
electrons (-). Normally, atoms have equal + and - charges, making them neutral.
🧤
Rubbing Transfers
Electrons
When you rub the balloon on the sweater, electrons jump from wool to rubber.
The balloon gains extra electrons (becomes -) and the sweater loses electrons (becomes +).
🧲
Opposite Charges Attract
The fundamental rule: + attracts - and same charges repel.
This is why the charged balloon sticks to the sweater and can pick up small pieces of paper!
🏠
Induced Charge on Wall
When the - balloon approaches the wall, it pushes wall's electrons away,
leaving + charges near the surface. This creates attraction even though the wall was neutral!
⚡
Static Discharge
When enough charge builds up, electrons can jump through air as a spark! This
is what happens with lightning - a giant static discharge between clouds and ground.
🔬
Triboelectric Series
Different materials have different tendencies to gain or lose electrons. Rubber loves to
grab electrons, while wool easily loses them. That's why this
combination works so well!
⚡ Fun Facts
1
A single lightning bolt can contain up to 1 billion volts of electricity! That's enough
static electricity to power a 100W light bulb for 3 months.
2
You experience static shocks more in winter because dry air is a poor conductor. Humidity
helps discharge static electricity safely.
3
Helicopters use grounding wires to discharge static before people exit. Without this, the
static buildup from rotating blades could cause dangerous sparks!