A $10 ~\mu \mathrm{C}$ charge is divided into two parts and placed at $1 \mathrm{~cm}$ distance so that the repulsive force between them is maximum. The charges of the two parts are:

Question

$9 ~\mu\mathrm{C}, 1 ~\mu \mathrm{C}$

$5 ~\mu\mathrm{C}, 5 ~\mu \mathrm{C}$

$8 ~\mu\mathrm{C}, 2 ~\mu \mathrm{C}$

$7 ~\mu\mathrm{C}, 3 ~\mu \mathrm{C}$

Solution

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