Science
Coulomb force
Estimate electrostatic force between two point charges in vacuum.
Calculators / Science / Point-charge electric potential
Point-charge electric potential calculator
Find the electric potential of a point charge relative to infinity.
On this page
Electric potential89,875.52V
Calculator controls
How to calculate
Find the electric potential of a point charge relative to infinity.
Electric potential = 8.9875517923e9*q/1e6/r V
Worked example
Source charge (µC): 1; Distance from charge (m): 0.1.
Electric potential: 89,875.52 V.
Assumptions and limits
Uses a point charge in vacuum and zero potential at infinity. It is not a voltage measurement for a multi-conductor circuit.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Find the electric potential of a point charge relative to infinity.
When this tool is useful
Electric potential = 8.9875517923e9*q/1e6/r V
Understanding your inputs
| Input | What to enter |
|---|---|
| Source charge (µC) | Enter a number of at least -1000000000000 and no more than 1000000000000. |
| Distance from charge (m) | Enter a number of at least 1e-12 and no more than 1000000000000. |
Frequently asked questions
What assumptions does this calculation use?
Uses a point charge in vacuum and zero potential at infinity. It is not a voltage measurement for a multi-conductor circuit.
How is the result calculated?
Electric potential = 8.9875517923e9*q/1e6/r V