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# A spherical capacitor has an outer sphere of radius $0.15\;m$ and the inner sphere of diameter $0.2\;m$. The outer sphere is earthed and the inner sphere is given a charge of $6 \mu C$. The space between the concentric spheres is filled with a material of dielectric constant 6.

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(A) the capacitance of the inner sphere is $0.2 \times 10^{–9} F$
answered Jun 17, 2014 by