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Determine the electric potential at a location within a spherical shell with radius R.

1. V = GM/R
2. V = GM/a + GM/(a/2)
3. V = 3GM/a
4. V = GM/a

Correct answer: V = GM/R

Solution

Inside a spherical shell, the potential at any point is constant and equal to the potential on the surface of the shell, which is given by V = GM/R, where R is the radius of the shell.

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