Physics A-Level
Inverse-square law for electrostatic force
What Inverse-square law for electrostatic force means in Physics A-Level, as defined for OCR.
Definition of Inverse-square law for electrostatic force
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Reference: OCR
The electrostatic force between point charges obeys F = Qq/(4πε₀r²), an inverse-square relationship.
Topics that use Inverse-square law for electrostatic force
- Electric potential and energy (OCR A-Level)
Related terms
- Electric potential
- Geometry determining capacitance
- Graphical representation of force against distance
- Permittivity of free space
- Potential difference
- Sign convention for like and unlike charges
- Work done
- Work done as area under a force–distance graph
Using Inverse-square law for electrostatic force in the exam
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