Physics - Elecrostatics Question with Solution | TestHub

Consider the force$\mathrm{F}$on a charge '$\mathrm{q}$' due to a uniformly charged spherical shell of radius$\mathrm{R}$carrying charge$\mathrm{Q}$distributed uniformly over it. Which one of the following statements is true for$\mathrm{F}$, if  '$\mathrm{q}$' is placed at distance$\mathrm{r}$from the centre of the shell?