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A 1.9 cm -radius metal sphere carries 80 nC and is surrounded by a concentric spherical...

A 1.9 cm -radius metal sphere carries 80 nC and is surrounded by a concentric spherical conducting shell of radius 17 cm carrying -80 nC .

A) Find the magnitude of the potential difference between the shell and the sphere.(kV)

B) How would your answer change if the shell charge were changed to +160 nCnC ? Enter the new magnitude for the potential difference.

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