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A metal sphere of radius r(1) charges to...

A metal sphere of radius `r_(1)` charges to a potential `V_(1)` is then placed in a thin-walled uncharged conducting spherical shell of radius `r_(2)`. Determine the potential acquired by the spherical shell after it has been connected for a short time to the sphere by a conductor.

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The correct Answer is:
`V_(2)=V_(1) r_(1)/r_(2)`
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