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What if initially a charge 2.5 C is put on shell #1 with radius 4.8 m, then a far away shell #2 (initially neutral) with radius 9.6 m is connected to shell #1 by a long conducting wire. (a) What is the final charge on shell #1?Q = C(b) What is the final charge on shell #2?Q = C(c) What is the electric potential V on shell #1?V = V(d) What is the electric potential V on shell #2?V = V

A thin circular disc of radius a has a total charge Q uniformly distributed over it. It lies in the x - y plane, centered on the origin. The charge density on the disc is p(F) = e ng² 8(2') for x2 + y2 ≤a² and 0 elsewhere. Calculate (a) the electrostatic potential and (b) the electric field at a general point z on the positive z axis.

The potential of the field inside a charged ball of radius R dependsonly from the distance to its center r according to the law φ=ar+b  where a and b areconstants. Find: a) the electric field E inside the ball; b) bulk charge density ρ; charge of the ball Q.