# A charged cube

Six identical square plates have surface charge density $\sigma=1 \mu C/m^2$. What would be the force of interaction in Newtons between the plates if they are arranged to form a cube (the force acting on one face of the cube). The side of the plates is $L=10cm$.

Details and assumptions

The vacuum permittivity is $\epsilon_{0}=8.85\times 10^{-12} F/m$.

×