`V = k(q/r)`

Enter a value for all fields

The Electric Potential equation is used to calculate the Electric Potential(V) using Coulomb's Constant(k), the charge(q), and the distance(r).

INSTRUCTIONS: Choose and enter the following units:

• (q) The magnitude of the charges
• (r) The distance between the charges

*You don't need to enter k for Coulomb's Constant since it is already calculated for you.

The Math / Science

The potential energy associated with a varying force is Electric Potential. The following formula is commonly used to calculate Electric Potential:  `V = k*(q/r)` where:

• V = Electric potential
• k = Coulomb's Constant
• q = charge
• r = distance

Notes:

Coulomb's Constant may be more familiar in the form:

`1/(4piepsilon_0)`

where `epsilon_0` is the permittivity of free space.

References

22.5 Voltage for nonuniform fields by Benjamin Crowell, Light and Matter  licensed under the Creative Commons Attribution-ShareAlike license.