16. A continuous metal sphere of radius R = 10 cm carries a uniformly distributed charge with a surface density of σ = 1 nC / m2. Determine the strength and potential of the electrostatic field: 1) in the center of the sphere; 2) at a distance of r1 = 15 cm from the center of the sphere.

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