# charges -q, Q and -q are placed at equal distance on a straight line, if the potential energy of the system of three charges is zero, then find ratio of Q/q?

Eshan
4 years ago
Let the separation between charges -q and Q be.
So the separation between the other pair of -q and Q is also, and that between -q and -q is.

Since the potential energy of the whole system is zero,