PPT Slide
(a) Find the size and direction of the electric field at the following distances from the center of the solid ball:
(ii) 3 cm (Ans: E=5x105 N/C, radially inward)
(iv) 6 cm (Ans: E=1x105 N/C, radially outward)
(b) Find the amount of charge on the following surfaces:
(i) outside surface of ball (Ans: -50 nC)
(ii) inside surface of shell (Ans: +50 nC)
(iii) outside surface of shell (Ans: +40 nC)
II. Charged Conductors in Electrostatic Equilibrium
1. Net charge resides on surface of conductor.
2. Net charge inside the conductor is zero.
3. Electric field inside the conductor is zero.
An Example: A thick, metal sphere with a net charge of +90 nC and inner and outer radii of 4 cm and 5 cm is centered around a solid metal ball with a net charge of -50 nC and a radius of 2 cm.