Electric Field Calculator

Visualize and calculate electric fields from point charges

Calculator Parameters

μC
cm
μC
cm
cm

Calculation Results

Field from q₁

0 N/C

Field from q₂

0 N/C

Total Electric Field

0 N/C

Force Direction

No calculation yet

Field Visualization

Positive charge
Negative charge
Test position

Field Strength Along Axis

Physics Behind the Calculation

The electric field E at a point in space due to a point charge is given by Coulomb's Law:

E = k * |q| / r²

Where:

  • E is the magnitude of the electric field (N/C)
  • k is Coulomb's constant (8.99 × 10⁹ N·m²/C²)
  • q is the charge (C)
  • r is the distance from the charge to the point (m)

For multiple charges, the total electric field is the vector sum of the fields from each individual charge. In this 1D calculator, we simply add or subtract the field magnitudes based on their direction.

Note: In this calculator, we're working in one dimension (along the x-axis) for simplicity. In real 2D or 3D space, electric fields are vectors that require vector addition to combine properly.

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