Electric Potential Calculator
Electric potential calculator
Compute electric potential from a point charge at distance r.
Result
-51,357.43881314286 V
Uses V = kq/r (sign follows charge).
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Advanced options
Flow
- Enter charge value in coulomb.
- Enter radial distance in meters.
- Read potential in volts including sign.
Example
Worked example: q = -2e-6 C, r = 0.35 m
- 1 Multiply Coulomb constant by q.
- 2 Divide by radial distance r.
- 3 Sign is preserved from charge sign.
Electric potential is about -51357 V.
How
- Enter charge value in coulomb.
- Enter radial distance in meters.
- Read potential in volts including sign.
Avoid
- Using magnitude when sign of potential is required.
- Confusing electric field formula with potential formula.
Checks
Best fit
Electric Potential Calculator is built for calculate electric potential from point charge and distance using coulomb model. If Electric Potential Calculator does not match the input scope, compare the answer with a second method.
Input check
Match the entered values to this rule before copying the answer: V = kq / r.
Sanity check
For Electric Potential Calculator, use the worked example as a quick benchmark: Electric potential is about -51357 V. If the electric potential calculator answer is far away, check whether an input, unit, or mode changed.
Before copying
Review this common issue first: using magnitude when sign of potential is required.
FAQ
Why can potential be negative?
Potential sign depends on charge sign and reference convention.
Can I use this for multiple charges?
For multiple charges, superposition is required and not covered here.
Does this give potential energy?
Potential energy equals test charge multiplied by potential.
Switch
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