Coulomb's Law and Permittivity
Two identical point charges are separated by a distance r in a medium of permittivity ε₁, resulting in an electrostatic force of magnitude F. The medium is then changed to one with a permittivity of ε₂ = ε₁/2, and the distance between the charges is increased to 2r. What is the magnitude of the new force?
A
F/8
B
2F
C
F/2
D
F/4
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