# Two charges of $5\; nC$ and $-2 nC$ are placed at points $(5 cm, 0, 0)$ and $(23 cm, 0, 0)$ in region of space where there is no other external field. Calculate the electrostatic potential energy of this charge system.

## 1 Answer

$U= -0.5 \mu l$
Hence C is the correct answer.
answered Jun 11, 2014 by