Question

Charge is distributed uniformly on the surface of a spherical balloon (an insulator). A point particle with charge qis inside. The electrical force on the particle qis greatest when:
A) it is just outside the surface of the balloon
B) it is at the center of the balloon
C) it is halfway between the balloon center and the inside surface
D) it is anywhere inside (the force is same everywhere and is not zero)
E) it is anywhere inside (the force is zero everywhere)

Answer

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