A charge 48 C is placed at the center of the hollow spherica

A charge +4.8 C is placed at the center of the hollow spherical conductor with the inner radius 4.0 cm and outer radius 5.5 cm.Suppose the conductor initially has a net charge of +9.6 C instead of being neutral. What is the total charge (a) on the interior and (b) on the exterior surface?

Solution

The total charge on the interior is -4.8 C because the net electric field is zero.

b)

The total charge on the exterior surface is +9.6 C- (-4.8 C)=14.4 C