The conducting spherical shells shown in the figure are connected b...

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The conducting spherical shells shown in the figure are connected by a conductor. The capacitance of the system is
(A) \( 4 \pi \varepsilon_{0} \frac{a b}{b-a} \)
(B) \( 4 \pi \varepsilon_{0} a \)
- (C) \( 4 \pi \varepsilon_{0} b \)
\( \mathrm{P} \)
W
(D) \( 4 \pi \varepsilon_{0} \frac{a^{2}}{b-a} \)
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