Dielectric in Capacitor

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Homework Statement


A 1 μF capacitor is made up of thin sheets of polycarbonate (the transparent foil used as a wrap in cooking) which have a conducting film deposited on them.The foil is rolled up to form a cylinder of diameter 1 cm and length 2 cm. The relative permittivity of polycarbonate is 2.3. Estimate the thickness of the polycarbonate sheet.At the maximum recommended voltage of 50 volts across the terminals of the capacitor, what is the force per unit area compressing the dielectric


Homework Equations




The Attempt at a Solution


Answer: the thickness is 5×10^-6 m and pressure is 800 N/m^2. How to solve this problem?
 

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