Find the capacitance of a length l of the capacitor.

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Reference no: EM13962804

A capacitor consists of two concentric long cylindrical conductors of radii a and c, where c > a, and each is of negligible thickness.

The space between the conductors is filled with two layers of dielectric materials. Using cylindrical co-ordinates with z-axis along the axis of the cylindrical conductors, the space is filled with an LIH (linear, isotropic and homogeneous) dielectric of relative permittivity and the space with a second LIH dielectric of relative permittivity . The cylinders are sufficiently long that end effects can be neglected. The charge per unit length of the inner conducting cylinder is , and that on the outer conducting cylinder is .

a) Use the integral version of Gauss's law to find the electric field E and the electric displacement D in the region . Hence calculate the electrostatic field energy stored in a length l of the capacitor.


b) Hence find the capacitance of a length l of the capacitor.

Reference no: EM13962804

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