Question

A charge of 3 μc is placed at the center of a hollow conducting sphere that is a few centimeters thick. What is the charge on the outside surface of the sphere? Option 1: -3 μc Option 2: 0 μc Option 3: 3 μc Option 4: Cannot be determined

Answer 1

Option 3 is correct

The 3 μ charge at the center induces a -3μ charge on the interior of the sphere leaving a 3 μC on the exterior of the sphere - an external charge sees a 3 μC at the center of the sphere due to the charge on the exterior of the sphere