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Point Charge Electric Potential Calculator

Use this online point charge electric potential calculator with labeled inputs and a worked example. V = kq/r.

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voltage due to point charge online

Use point charge electric potential calculator online with the physical quantities shown below. Vacuum point charge with zero potential at infinity; not potential energy.

How to use it

Enter Source charge (C). Set Distance from charge (m). Select Calculate, check the result units, then copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
Source charge (C)Main input. Decimal or scientific notation. 0.000001
Distance from charge (m)Option. Decimal or scientific notation. Positive values only. 0.2

Calculation method

V = kq/r

Worked examples

Worked case for point charge electric potential calculator. Vacuum point charge with zero potential at infinity; not potential energy.

Point Charge Electric Potential Calculator — example with explicit inputs

Settings: Distance from charge (m): 0.2

Input:

0.000001

Expected result for the example input and options:

Output:

{
  "potential_V": 44937.75896149999
}

Limitations and common mistakes

  • Vacuum point charge with zero potential at infinity; not potential energy.
  • Match every input to its displayed unit; scientific notation such as 1e-6 is accepted.
  • This is the documented idealized model; real systems may require additional effects and measurement uncertainty.

Frequently asked questions

How can I use voltage due to point charge online?

Enter Source charge (C). Set Distance from charge (m). Select Calculate, check the result units, then copy or download the JSON result.

Which model does Point Charge Electric Potential Calculator use?

V = kq/r. Vacuum point charge with zero potential at infinity; not potential energy.

Technical references

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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