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Find the capacitance of unit length of a cylindrical capacitor which has conductor of radii 2.5 mm and 4.5 mm, respectively and the dielectric consists of two layers whose cylinder of contact is 3.5 cm in radius, the inner layer having a dielectric coefficinet 4 and the outer layer 6.

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The correct Answer is:
`0.442xx10^(-9)`F
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NN GHOSH-CAPACITORS-Exercise
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