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19 Nov 2019

A capacitor with a 3 mm gap has a potential difference of 6 volts (see the figure). A disk of glass 1.64 mm thick, with area the same as the area of the metal plates, has a dielectric constant of 1.9. It is inserted in the middle of the gap between the metal plates. Now what is the potential difference of the two metal disks? (It helps to make a diagram showing the electric field along a path.)

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Hubert Koch
Hubert KochLv2
23 Feb 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

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Textbook Problem

Two square plates of sides ℓ are placed parallel to each other with separation d as suggested in Figure P25.39. You may assume d is much less than ℓ. The plates carry uniformly distributed static charges +Q0 and −Q0. A block of metal has width ℓ, length ℓ, and thickness slightly less than d. It is inserted a distance x into the space between the plates. The charges on the plates remain uniformly distributed as the block slides in. In a static situation, a metal prevents an electric field from penetrating inside it. The metal can he thought of as a perfect dielectric, with κ → ∞. (a) Calculate the stored energy in the system as a function of x. (b) Find the direction and magnitude of the force that acts on the metallic block. (c) The area of the advancing front face of the block is essentially equal to ℓd. Considering the force on the block as acting on this face, find the stress (force per area) on it. (d) Express the energy density in the electric field between the charged plates in terms of Q0, ℓ, d, and ϵ0. (e) Explain how the answers to parts (c) and (d) compare with each other.

Figure P25.39

Chapter 25, Problem 39AP, Two square plates of sides are placed parallel to each other with separation d as suggested in

 

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