Answer to Question #301508 in Electricity and Magnetism for Dregoee

Question

Find the distance of an isolated positive point charge of 10 nC, in order for it to produce

an electric potential of 120 V.

Answer 1

Answer

the distance of an isolated positive point charge of 10 nC, in order for it to produce

an electric potential of 120 V.

$r=\frac{Kq}{V}\\=\frac{9*10^9*10*10^{-9}}{120}\\=0.75m\\=75cm$