Question

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

Answer 1

when  two bodies of same radius are bring in contact to each other then the flow of charge take place till the acquire same charge .  

Here also , Charge become equale when the uncharged body touched to the body of charge qA 

Q = New charge on both body 

Q = (qA + 0 ) / 2
_____________________________________________________________
F= k x Q X Q / d²
_____________________________________________________________
F = k x qA² / 4 d²
_____________________________________________________________

Answer 2

Explanation:

____Hope this'll help U ✌ ✌