Physics
A conducting solid sphere of radius 10 cm is charged by conduction with a positive rod. The sphere acquires a charge of 10 μC. Determine the electric field, E, at point A located just inside the sphere.
Calculate the electric field 2 meters away from a charged conductor with a charge of 5 C. (Assume Coulomb's constant k = 8.99 × 10^9 N·m²/C²)
How can the concept of charge movement to the surface of a conductor be applied in technology?