We have a hollow metallic sphere with charge +5.0 µC and radius 5.0 cm. We insert a - µC charge at the center of the sphere through a hole in the surface. What charge now rests on the outer surface of the sphere?

Question

Quizplus · Accepted Answer

The electric field inside a hollow conductor is zero. So, the charge +5.0 µC on the sphere will be distributed on the inner surface of the sphere to cancel the electric field due to the charge +10 µC at the center. So, the charge on the outer surface of the sphere will be +10 µC - +5.0 µC = +5 µC.

We Have a Hollow Metallic Sphere with Charge +5