Answer to Question #343677 in Field Theory for Nuel Fudalan

Question

An electric charge q caused an electric potential of V = -218 V at point A 10.6 m from q. What is the electric charge q?

Answer 1

$$V=k\frac{q}{r}$$

$$q=Vr/k\\ =-218*10.6/9*10^9=-2.57*10^{-7}\:\rm C$$