Erthiox Labs - Electromagnetic Fields Simulator

Electrostatic Fields

Coulomb's Law + Field Lines

touch_app Tap to place charges • Drag to reposition

Charge Type

Charge Magnitude

Charge Value (q)5 μC

Visualization Mode

Line Density

Lines per Charge12

Field at Cursor

E-field |E|0 N/C

Potential V0 V

Force Angle0°

Charges (n)0

Theory: Electrostatics

Coulomb's Law defines the electric force between two point charges as directly proportional to the product of their magnitudes and inversely proportional to the square of the distance between them (\(F = k_e \frac{q_1 q_2}{r^2}\)). Electric field lines flow out of positive charges (sources) and into negative charges (sinks). Equipotential surfaces represent areas of equal electric potential.

Interactive Lab Tasks

Task 1: Electric Dipole
Place one positive charge (+5 μC) and one negative charge (-5 μC) nearby. Select 'Field Lines' view to observe the loops flowing between them. Task 2: Energy Landscape
Toggle the 'Potential Heatmap' mode. Observe the red glow (positive energy hill) and blue glow (negative energy valley). Task 3: Proximity Electric Field
Move the positive and negative charges extremely close together and hover the cursor near them. Observe the dramatic rise in E-field |E|.