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Two large thin metal plates are parallel...

Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude `17.0times10^(-22)C//m^2`. What is E :
in the outer region of the first plate

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Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude 17.0times10^(-22)C//m^2 . What is E : in the outer region of the second plate

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Two large, thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitude 17.0 xx 10^(-22) C .m^(-2) .What is the electric field between the plate ?

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Show that the force on each plate of a parallel plate capacitor has a magnitude equal to (1/2)QE, where Q is the charge on the capacitor, and E is the magnitude of electric field between the plates. Explain the origin of the factor 1/2

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