Physics - Electrostatics Question with Solution | TestHub

Force exerted by an electric dipole on a charge is inversely proportional to the cube of distance of the charge from the centre of the dipole

$F\propto \frac{1}{r^3}$

$\therefore \frac{F}{F^{\prime }}={\left(\frac{r^{\prime }}{r}\right)}^3$

$\frac{F}{F^{\prime }}={\left(\frac{2}{1}\right)}^3$

$F^{\prime }=\frac{F}{8}$