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Electrostatic Forces

A charged met...

Question

A charged metallic sphere A having charge qAis brought in contact with an uncharged metaallicsphere of same radius and then seperated by a distance d. What is the electrostatic force between them?

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Solution

$S i n c e b o t h t h e s p h e r e s a r e i d e n t i c a l t h e n c h a r g e w i l l b e t h e m d i s t r i b u t e d e q u a l l y . n o w c h a r g e o n b o t h i s q / 2 h e n c e f o r c e b e t w e e n t h e m i s g i v e n b y : F = \frac{k q_{1} q_{2}}{d^{2}} = \frac{k q^{2}}{4 d^{2}}$

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