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Lessons for this topic haven’t been written yet. The objectives below show exactly what the syllabus expects, so you can plan with them in the meantime.
What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Understand that, at points outside a spherical conductor, the charge on the sphere can be treated as a point charge at its centre.
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Recall and use Coulomb’s law, F = Q₁Q₂ / (4πε₀r²), for the force between two point charges in free space.
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