PhysicsElectrostaticsJAMB
Two point charges attract with force F. If each charge is doubled and the distance between them is also doubled, the new force is
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Answer: C. F
F ∝ q₁q₂/r²: the charges multiply F by 4 and the distance divides it by 4, so it stays F.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.