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Introductory Physics Homework Help
Electric Potential of a Sphere at Different Locations
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[QUOTE="haruspex, post: 6005808, member: 334404"] Electric potential is always relative to some defined zero. In principle, you can choose that zero arbitrarily, but in most cases the convention is to define it as the potential at infinity. In the present case you are instructed to use that convention. This means that the potential at, say, the origin need not be zero. Integrating from the origin to the inner surface of the shell will only tell you the relative potential of those two points. To find the potential relative to the defined zero you must do at least one integral to infinity. [/QUOTE]
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Electric Potential of a Sphere at Different Locations
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