Q.
Two charged spheres separated by a distance ′d′ exert some force on each other. If they are immersed in a liquid of dielectric constant 2, then what is the force exerted, if all other conditions are same?
Given : Distance between two charges =d.
and dielectric constant (k)=2. Force between two charged spheres (F)=4πε01×r2q1q2, where ε0 is
permitivity of free space. and force for a medium wit dielectric constant k F′=k1×4πε01×r2q1q2=kF=2F