A parallel plate capacitor of capacitance 12.5 pF is charged by a battery connected between its plates to potential difference of 12.0 V. The battery is now disconnected and a dielectric slab (r = 6) is inserted between the plates. The change in its potential energy after inserting the dielectric slab is _______× 10–12 J. 

                                                                   JEE -2024

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