Figure shows two conducting thin concentric shells of radii \( r \) and \( 3 r \). The outer she...

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Figure shows two conducting thin concentric shells of radii \( r \) and \( 3 r \). The outer shell carries charge \( q \) and the inner shell is neutral. The amount of charge that flows from the inner shell to the earth after the key \( K \) is closed is equal to \( (1 / n)^{\text {th }} \) of the charge on the outer shell. What is the value of \( n \) ?
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