InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
A and B are two identical point sized metal spheres each holding the same charge .q.. These two are separated by certain distance and the mutual electrostatic force between them is F. If a third identical uncharged sphere .C. is touched with A and kept exactly at the midpoint of line joining A and B, what is the resulting force on C and its direction? |
Answer» SOLUTION :FORCE between two charges  When third identical uncharged sphere TOUCHED with A and placed at the mid point of AB, then  `F_("net") = F_(1) - F_(2)` `K ((q^(2)//4))/(r^(2)//4)- K ((q^(2)//2))/(r^(2)//4) = (Kq^(2))/(r^(2))-2.(Kq^(2))/(r^(2))= F- 2F` `F_("net")= -F` i.e., resultant force is F towards A |
|