The self energy of a conducting shell of radius \( R \) and charged \( Q \) is (a) \( K Q^{2} / ...

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The self energy of a conducting shell of radius \( R \) and charged \( Q \) is
(a) \( K Q^{2} / R \)
(b) \( K Q^{2} / 2 R \)
(c) \( 2 K Q^{2} / \underline{R} \)
(d) \( 3 K Q^{2} / 5 R \)
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