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Effect of Permittivity on Electric Force

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Two identical point charges are separated by a distance r in a medium with permittivity ε. If the medium is replaced with another having permittivity 4ε, how does the electric force between the charges change?

A

It increases to 4 times its original value

B

It decreases to 1/2 of its original value

C

It remains unchanged

D

It decreases to 1/4 of its original value

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