# Two identical spheres A and B are equally charged and seperated by a certain distance. Another identical uncharged sphere C is brought in contact with A and then placed mid way between A and B,. Calculate the resultant force on C if initial force between A and B is 2*10^-5 N.

Eshan
5 years ago
Let the distance between the charges beand their charges beeach.

Hence the force between them is

When identical uncharged sphere is brought in contact, the charge on the charged sphere gets divided equally. Hence charge on both A and C becomes.
Hence force on C due to A after it is moved to the mid point=

Force on C due to B=
Hence net force on C=2F-F=F
Gitanjali Rout
184 Points
5 years ago
Hence net force on C=2F-F=FForce on C due to B=.Hence force on C due to A after it is moved to the mid point=When identical uncharged sphere is brought in contact, the charge on the charged sphere gets divided equally. Hence charge on both A and C becomeseach.Hence the force between them isand their charges beLet the distance between the charges be
thanks