Two metallic spheres each of mass $M$ and radius $R$ charged separately to $Q_{1}$ and $Q_{2},$ are at a distance $^{'} d^{'}$ between $C$ their centers $(d > 2 R) .$ The force between them will be:

\frac{1}{4 π ε_{0}} \frac{Q_{1} Q_{2}}{d^{2}}

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\frac{1}{4 π ε_{0}} \frac{Q_{1} Q_{2}}{d}

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< \frac{1}{4 π ε_{0}} \frac{Q_{1} Q_{2}}{d^{2}}

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Solution

The correct option is A $\frac{1}{4 π ε_{0}} \frac{Q_{1} Q_{2}}{d^{2}}$
Two metallic spheres each of mass $= M$
radius $= R$
$Q_{1}$ and $Q_{2}$ distance $= d$ between $e$ their centre $(d > 2 R)$
$F = \frac{1}{4 π ϵ_{0}} \frac{Q_{1} Q_{2}}{d^{2}}$
(Using coulombs' law and the force is in depend of mass and radius in coulomb law).

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