APFIVE Coulomb's Law and Permittivity
Two identical point charges are separated by a distance r in a medium with permittivity ε₁, creating a force F. If the medium is changed to one with permittivity ε₂ = ε₁/2, and the distance is doubled to 2r, what is the new force?
A
2F
B
F/4
C
F/2
D
F/8
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