📱

Rotate Your Device

Electric Field Football is designed for landscape mode. Please rotate your phone or tablet sideways to play.

LANDSCAPE MODE REQUIRED
⚽ 0
Place Charges
RED = + BLUE = −
SMALL / MED / LARGE
q 1.0
Controls
Tap field → place charge
Drag → reposition
Dbl-tap → remove
Tap ball → adjust m & q
⚡ Drag charges mid-flight!
Mission
Legend
Positive (+)
Negative (−)
Net field (green)
Ball (test charge)
V = kq/r (POTENTIAL)
− (neg)0+ (pos)
⬡ GAUSS'S LAW
Q enclosed—
Flux Φ (rel.)—
Charges inside—
Φ = Qenc/ε₀ — flux depends only on enclosed charge. Draw a loop around charges to see!
⚡ PUZZLE OBJECTIVE
⏱ —
Live Physics
sim. units (scaled)
Ex—
Ey—
|E|—
Vx—
Vy—
|V|—
Ax—
Ay—
Fx—
Fy—
V (pot.)—
Visualize
Key Equations
Calculation Steps
Created by Kajal Thapar
📔 Physics Journal
Equations unlock as you discover them through play
⚡ Electric Field Football
Educational Physics Simulation
Created and Conceptualized by
Kajal Thapar

An interactive simulation where students place electric charges to steer a football using electric fields — learning Coulomb's Law, superposition, and Newton's second law through play.
E = kq / r²
F = qE
a = F / m
E_net = Σ Eᵢ
V = kq / r
E = −∇V
Φ = Q/ε₀
Physics Engine: Semi-implicit Euler integration
with softened Coulomb field (ε-regularization)
and field-magnitude clamping for stability.

Grades: Nursery through Grade 12
Levels: 4 progressive challenge levels
🔓 Equation Unlocked!
🔬 Physics Experiments
3.0