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A parallel plate capacitor, in which the space between the plates is filled with a dielectric...

A parallel plate capacitor, in which the space between the plates is filled with a dielectric material with dielectric constant κ = 4.3, has a capacitance of C=968 μF and it is connected to a battery whose voltage is V=25 V and fully charged. Once fully charged, while still connected to the battery, dielectric material is removed from the capacitor. How much change occurs in the energy of the capacitor; final energy minus initial energy? Express your answer in units of mJ (milli Joules) using zero decimal places.

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In this question we have to find the change in energy stored in the capacitor when dielectric is removed from it.

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