2.30 A spherical capacitor has an inner sphere of radius 12 cm and an outer sphere of radius 13 cm. The outer sphere is earthed and the inner sphere is given a charge of 2.5 \mu C. The space between the concentric spheres is filled with a liquid of dielectric constant 32. 

(b) what is the potential of the inner sphere?

Answers (1)

Potential of the inner sphere is given by 

V=\frac{q}{C}=\frac{2.5*10^{-6}}{5.5*10^{-9}}=4.5*10^2

Hence the potential of the inner sphere is 4.5*10^2 V.

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