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.

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