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A point charge of -6 μC is located at the origin, which is the center of...

A point charge of -6 μC is located at the origin, which is the center of a thin spherical shell of 10 cm radius. This shell is uniformly charged with 17 μC. What is the electric field at r=5 cm and r=15?
E1=________V/m
E2=________V/m
What is the electric potential at these points?
V1=________V
V2=________V

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