Presets Random Position +1/-1 (x,y)=(-1,0)&(1,0) +1/-1 (x,y)=(-1,0)&(1,0) +2/-2 Random +1/+1/+1 Random -1/-1/-1 + Charge - Charge

Electric Field and Charges Simulation

Explore how electric field lines and vectors behave when you place positive and negative charges on the canvas.

• + Charge or – Charge to add charges.
• Drag existing charges to reposition them.
• Toggle Field Vectors or Field Lines to switch between different visualizations.
• Use Presets to explore common configurations, like a dipole.

Pedagogical Tip: Encourage learners to predict the shape of field lines before toggling them on. Then compare the result and discuss why field lines must start on **positive charges** and end on **negative charges** (or extend to infinity). This fosters **conceptual understanding** of electric fields.

Created by weelookang@gmail.com