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wo point charges of one coulomb separated by 1 m distance experience by a force of 9 × 10^(9) N. Dielectric constant of water is 80.
To find:
New force if they kept in water with same distance of separation.
Calculation:
In air, let force be f1.
In water, let force be f2. The dielectric constant is denoted as .
So, final answer is:

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