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Calculation Formulas
We use the Principle of Superposition: simply add up the effects of every source charge.
1. Electric Potential (V)
Scalar sum of potentials from each charge:
V = k · (Q / r)
2. Electric Field Strength (E)
Vector sum of fields from each charge:
E = k · (Q / r²)
3. Coulomb Force (F)
Force acting on the probe charge:
F = Qprobe · E
Where:
- k = 8.99 × 10⁹ (Coulomb constant)
- Q = Source charge value
- r = Distance from source to probe