Answer to Question #293864 in Physics for joyjoy

Question

What is the potential at a point 18 m away from a 17.14 mC charge?

Answer 1

Given:

$r=18\:\rm m$

$q=17.14*10^{-3}\:\rm C$

The ptential of electric field

$$V=k\frac{q}{r}=9*10^9*\frac{17.14*10^{-3}}{18}=8.57*10^6\:\rm V$$