A 2.50-nF parallel-plate capacitor is charged to an initial potential difference ΔVi = 100 V and is then isolated. The dielectric material between the plates is paper, with a dielectric constant of 3.7. Requried:
a. How much work is required to withdraw the mica sheet?
b. What is the potential difference across the capacitor after the mica is withdrawn?

Explanation:

Formula to calculate the energy stored in a capacitor when it is filled with air is,

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Here, is the energy stored in a capacitor when it is filled with air.

is the parallel plate capacitor.

[/tex]V_{\mathrm{i}}[/tex] is the initial potential difference.

Substitute for and for to find the

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Formula to calculate the energy stored in a capacitor when it is filled with dielectric is,

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.