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A parallel plate capacitor is filled by ...

A parallel plate capacitor is filled by a dielectric whose relative permittivity varies with the applied voltage (U) as `epsilon = alpha U` where alpha `= 2V^(-1)`. A similar capacitor with no dielectric is charged to `U_(0) = 78V`. It is then is connected to the uncharged capacitor with the dielectric. Find the final voltage on the capacitors.

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6 volt
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