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Coulomb force between charges in a dielectric medium compared with air

This type of question, asked 2 times: 24 Jan 2023, 31 Jan 2024. All 2 questions below, oldest first.

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  1. Question 1

    24 Jan 2023

    8
    If two charges q1q_{1} and q2q_{2} are separated with distance ' dd ' and placed in a medium of dielectric constant KK. What will be the equivalent distance between charges in air for the same electrostatic force?

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  2. Question 2

    31 Jan 2024

    94
    Force between two point charges q1q_{1} and q2q_{2} placed in vacuum at 'r' cm apart is F. Force between them when placed in a medium having dielectric K=5K = 5 at ' r/5r/5 ' cmcm apart will be:

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