The force between two charges placed in a medium at a distance 9 cm,is 16 dyne. on increasing one of the charges by 56 stat column it found that the distance between charger must be changed by 3 cm in order to keep the force same between them. calculate the magnitude of the charges and dielectric constant of the medium.

Dear Student ,
Here in this case use the equation ,
F=kq1q2r2When distance is r=9 cmthen , 16=kq1q281 .....(1)when r=(9+3)=12 cm then ,16=kq1q2+56144 ......(2)Now solving this two equations you will get , k , q1 and q2 .

Regards

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