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A spherical conducting shell has an inner radius of 0.2 m and an outer radius of 0.4 m. There is no charge on the outer surface
but the shell does have a nonzero net charge. All charges remain at rest. The potential at the outer surface is -2 V. The
potential at the center of the cavity is
V.
a. 0
b. +2
C. +8
d. -2
e. +4
f. -8
g. More than one of the listed numerical answers are possible.
h. -4

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