Three charges $+3 q,+q$ and $Q$ are placed on a straight line with equal separation. In order to mak

Question

Three charges $+3 q,+q$ and $Q$ are placed on a straight line with equal separation. In order to make the net force on $q$ to be zero, the value of $Q$ will be\

Professor PC Thomas Classes · Answer

For the force on the middle charge to be zero the two end charges must be equal and similar.