EVERYDAY CLARITY
Electric Field Calculator
What electric field magnitude does a point charge produce at this distance? Enter the stated values to calculate this model.
Your result
Signed radial electric field
N/C
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Source charge (C) | Enter source charge in C; use the same basis as the other measurements. |
| Distance (m) | Enter distance in m; use the same basis as the other measurements. |
Understanding your result
Read Signed radial electric field (N/C) in the units and model stated on this page. The formula field=8.9875517923e9*q/(r*r) defines the relationship; measurement accuracy and model applicability are separate from numerical precision.
Common mistakes
- Mixing input units or changing the physical meaning of a variable without changing the model.
Check your calculation
- Use the worked example as a known reference case, then change one input at a time and check the direction and units of the response.
Calculation checks, sources and review limits
What electric field magnitude does a point charge produce at this distance?
What electric field magnitude does a point charge produce at this distance? Enter the stated values to calculate this model.
Common uses
- What electric field magnitude does a point charge produce at this distance
How it works
field=8.9875517923e9*q/(r*r)
Worked example
Enter Source charge: 0.000001 C; Distance: 0.1 m. Results: Signed radial electric field: 898755.17923 N/C.