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  4. A given charge is situated at a certain distance from an electric dipole in the end-on position experiences a force F . If the distance of the charge is doubled, the force acting on the charge will be :-

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Q. A given charge is situated at a certain distance from an electric dipole in the end-on position experiences a force $F$ . If the distance of the charge is doubled, the force acting on the charge will be :-

NTA AbhyasNTA Abhyas 2020

Solution:

$F \propto \frac{1}{r^{3}}$
$\frac{F^{'}}{F}=\frac{r^{3}}{8 r^{3}}$
$F^{'}=\frac{F}{8}$