The figure gives the magnitude of the electric field inside and outside

[@blainethomas7026]

absolutley beautiful explanation

[@georgepul4541]

I saw your youtube clip with great interest. What are the references for the two E equations related to the two cases of r's? Should the E equations account for q densities? Are there E equations for a general filled body, and for special filled rectangular boxes and other shapes? Thank you.

[@critzieano873]

thnx !!!! you're a life saviour