17. A solid metal sphere of radius R = 20 cm carries a uniformly distributed charge with a surface density of σ = 1 nC / m2. Determine the electric field strength at points located at a distance of r1 = 16 cm and r2 = 36 cm from the center of the sphere. Build a graph of the dependence E (r).

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)