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Electric Field of a Point Charge — result sheet
Calculate the electric-field magnitude at a distance from an ideal point charge in vacuum.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Electric-field magnitude E = k |q| / r^2.
Coulomb's law gives the magnitude of the field from an isolated point charge. The sign of the charge controls field direction, while this page reports magnitude only.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Point charge — C; minimum -1000000; maximum 1000000
- Distance from charge — m; minimum 1.0E-6; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Point charge | 1.0E-6 |
| Distance from charge | 0.1 |
Electric-field magnitude is about 898755.18 N/C.
Assumptions and limits
- The source is treated as an isolated point charge in vacuum.
- Distance is positive and measured from the charge center.
- Nearby conductors, dielectric materials, charge distributions, and field direction are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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