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Electric Field from a Point Charge Calculator — result sheet
Calculate electric-field magnitude and potential from a point charge and distance.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Field magnitude=k|q|/r²; potential=kq/r, k=8.9875517923×10⁹ N·m²/C².
The field follows an inverse-square law while potential follows an inverse-distance law for an isolated point charge.
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 1000000000000
Worked example
| Input | Value |
|---|---|
| Point charge | 1.0E-6 |
| Distance from charge | 0.2 |
Field magnitude ≈224688.795 N/C; potential ≈44937.759 V.
Assumptions and limits
- The charge is isolated in vacuum and distance is positive.
- The field result is a magnitude; charge sign remains in the potential result.
- Material polarization, multiple charges, and breakdown limits 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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