OpenSTEMTool / Physics / Physics
Electric Field Visualizer – Free Online Scientific Calculator
Display two-dimensional electric field arrows for two point charges and calculate field strength at a probe point.
Interactive & 100% Free: Enter your values directly in the calculator above or change the default inputs below to compute outputs instantly in your browser. All computations run locally for immediate privacy and high performance.
What this tool calculates
View electric fields from stationary point charges. This computational model is built for university students, educators, lab researchers, and practicing engineers who need transparent, verified scientific calculations.
Calculation method and underlying formula
Electrostatic Coulomb field: E = Σ (kq/r³)r⃗. Arrows show direction, normalized for legibility.
The calculation evaluates relationships between input variables according to standard scientific principles. Inspect the editable parameter table below to test specific values.
Step-by-step calculation guide
- Input Parameters: Enter the required values into the parameter table below.
- Model Evaluation: The system automatically evaluates the governing equations locally with high numerical precision.
- Analyze & Export: Review the calculated outputs, inspect the generated curve plot, and download publication-ready reports or CSV data.
Worked example: default input values
The default worked example demonstrates calculation with the following parameters. You can modify any value in the interactive panel to re-evaluate your specific scenario:
| Parameter | Example value | Unit |
|---|---|---|
| Charge 1 (nC) | 2 | — |
| Charge 1 x (m) | -1 | — |
| Charge 1 y (m) | 0 | — |
| Charge 2 (nC) | -2 | — |
| Charge 2 x (m) | 1 | — |
| Charge 2 y (m) | 0 | — |
| Probe x (m) | 0 | — |
| Probe y (m) | 1 | — |
Worked example results
Based on the default parameters entered above, the model computes the following quantities:
| Calculated quantity | Output value | Unit |
|---|---|---|
| E x at probe | 12.7103 | N/C |
| E y at probe | 0 | N/C |
| |E| at probe | 12.7103 | N/C |
Assumptions and interpretation
- This is a 2D slice of the three-dimensional point-charge field.
- No physical finite electric field exists at an ideal mathematical point charge.
Educational calculations are not substitutes for professional engineering design approvals, certified laboratory assays, clinical diagnostics, or peer-reviewed scientific publications. Always inspect units, verify physical domains, and evaluate boundary conditions.
Frequently asked questions (FAQ)
How does the Electric Field Visualizer calculator work?
The calculator computes results locally in your browser using the established mathematical model: Electrostatic Coulomb field: E = Σ (kq/r³)r⃗. Arrows show direction, normalized for legibility.
What are the input parameters for Electric Field Visualizer?
The required parameters include: Charge 1 (nC) (dimensionless), Charge 1 x (m) (dimensionless), Charge 1 y (m) (dimensionless), Charge 2 (nC) (dimensionless), Charge 2 x (m) (dimensionless), Charge 2 y (m) (dimensionless), Probe x (m) (dimensionless), Probe y (m) (dimensionless).
What assumptions apply to this Electric Field Visualizer model?
This is a 2D slice of the three-dimensional point-charge field.. No physical finite electric field exists at an ideal mathematical point charge.
Can I export results from this calculator?
Yes. OpenSTEMTool supports exporting publication-ready SVG charts, PNG graphics, raw CSV data tables, JSON parameter archives, and printable HTML/PDF scientific reports.
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