85. Ball, oil immersed (ε = 2,2), has a surface charge density σ = 1 SCLC / m2 and the potential φ = 500 V. To determine: 1) the radius of the sphere; 2) the charge of the ball; 3) the capacity of the shell; 4) the energy sphere.

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