Coulombs law states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them.The constant of proportionality in a vacuum is k where k = 1/4πε0 = 9.0 × 109 Nm2C-2.ε0 is the permittivity of free space and equals 8.85 × 10-12 Fm-1
Coulombs Law
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Specification: OCR Physics A (H556), A-level, 6.2.2 Coulomb's law. Topic: Electric Fields.
Key terms in this lesson
- half-life
- The average time taken for the number of nuclei of a radioactive isotope in a sample, or its activity, to halve.
- activity
- The number of nuclei of a radioactive isotope that disintegrate per second, measured in becquerels.
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All 17 lessons in Electric Fields · All OCR A-level Physics topics