the force of repulsion between two point charges is F , when they are d distance apart if the point charges are replaced by conducting spheres each of radius r and the charges remain same . the separation between the centre of a sphere is d , then force of repulsion between them is

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Q. The force of repulsion between two point charges is

F

, when these are at a distance of

1 m

apart. Now they are replaced by conducting spheres each of radii

25 c m

having the same charge as that of point charges. The distance between their centres is

1 m

, then compare the force of repulsion in the two cases.

Two insulated charged copper spheres A and B have their centres separated by a distance of 50 cm. What is the mutual force of electrostatic repulsion if the charge on each is $6.5 \times 10^{- 7}$ C? The radii of A and B are negligible compared to the distance of separation.

What is the force of repulsion if each sphere is charged double the above amount, and the distance between them is halved?

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