Q)
A cylindrical capacitor has two co-axial cylinders of length $15\;cm$ and radii $1.5$ and $1.4\;cm$. The outer cylinder is earthed and inner cylinder is given a charge of $3.5 \mu C$. Determine the capacitance of the system and the potential of the inner cylinder. (Neglect end effects i.e. bending of field lines at the ends.)
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