There is a hollow,conducting,uncharged sphere with a negative charge inside the sphere.Consider the electrical potential at the inner and outer surfaces of the sphere.Which of the following is true?
A)The potential on the inner surface is greater.
B)The potential on the outer surface is greater.
C)The potentials on both surfaces are zero.
D)The potentials on both surfaces are equal but not zero.

Question

There is a hollow,conducting,uncharged sphere with a negative charge inside the sphere.Consider the electrical potential at the inner and outer surfaces of the sphere.Which of the following is true? 
A)The potential on the inner surface is greater. 
B)The potential on the outer surface is greater. 
C)The potentials on both surfaces are zero. 
D)The potentials on both surfaces are equal but not zero.

Quizplus · Accepted Answer

Since the sphere is conductive, the charges inside it will always spread out evenly on the surface. Therefore, the potential on both the inner and outer surfaces will be equal. However, since there is a negative charge inside the sphere, the potential will be negative. Hence, the potentials on both surfaces are equal but not zero. Therefore, the correct choice is D.

There Is a Hollow,conducting,uncharged Sphere with a Negative Charge Inside