Question

Two large parallel plane sheets have uniform charge densities +sigma and -sigma. Determine the electric field (1) between the sheets, and (2) outside the sheets.

Answer 1

between the sheets :

electric field intensity due to left plate on A = $\frac{\sigma}{2\epsilon_0}$ away from the plate .

electric field intensity due to right plate on A = $\frac{\sigma}{2\epsilon_0}$ towards the plate.

so, net electric field at A = $\frac{\sigma}{2\epsilon_0}+\frac{\sigma}{2\epsilon_0}$

= $\frac{\sigma}{\epsilon_0}$

similarly, outside the sheets :

electric field due to left plate on B = $\frac{\sigma}{2\epsilon_0}$away from the plate.

electric field due to right plate on B = $\frac{\sigma}{2\epsilon_0}$ toward the plate.

so, net electric field at B = $\frac{\sigma}{2\epsilon_0}-\frac{\sigma}{2\epsilon_0}=0$.

Answer 2

I hope it Will help you

I hope it Will help you