A charged capacitor has energy U 2 x 104 J and Co 4 x 10 8 F in the absence of a dielectric When the potential difference is

Question

A charged capacitor has energy U 2 x 104 J and Co 4 x 10 8 F in the absence of a dielectric When the potential difference is kept constant by keeping the capacitor connected to the supply assuming 150 0 i find the new energy stored when the dielectric slab is completely filled with the capacitor Account for this change in energy ii how much excess charge flows from the supply ii find the ratio of the charge on the plate of the capacitor and the charge induced on the dielectric

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