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A capacitor with parallel, circular plates has a constant charge of equal and opposite sign on the
the plate between which there is the void. The geometric dimensions of the capacitor (diameter and distance between the plates) are d
oubled.
If the initially stored energy density was Uo, what is the new energy density?
Ou 14
or
O 4 u
Ou / 16
or
O 16u
ing

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