Which of the following is true at the conductor surface? O The answer can be found on more than one of the other choices. O At the conductor surface, the surface charge density is always equal to the magnitude of the electric flux density. O At the conductor surface, the surface charge density is always equal to the magnitude of the electric flux. O At the conductor surface, the surface charge density is always equal to the magnitude of the electric field.

A nonconducting spherical shell has an inner radius A, an outer radius B, and a nonuniform charge density given by p(r) sindr where B and a are constants. r3 The inner spherical shell is surrounded with a concentric nonconducting spherical shell that has an inner radius B, outer radius C, and a uniform charge density such that the electric field for r> C is zero. What is the total charge contained in the inner spherical shell? b. What is the charge density in the outer spherical shell? c. What is the magnitude of the electric field for A