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  4. Two identical conducting spheres having unequal positive charges q1 and q2 separated by distance r . If they are made to touch each other and then separated again to the same distance, the electrostatic force between the spheres in this case will be (neglect induction of charges)

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Q. Two identical conducting spheres having unequal positive charges $q_{1}$ and $q_{2}$ separated by distance $r .$ If they are made to touch each other and then separated again to the same distance, the electrostatic force between the spheres in this case will be (neglect induction of charges)

Electric Charges and Fields

Solution:

$F_{1} \propto q_{1} q_{2}$ and $F_{2} \propto \frac{\left(q_{1}+q_{2}\right)^{2}}{4}$
Thus, $F_{2} > F_{1}$