A parallel plate capacitor of capacitance C is charged to a potential V by a battery. Without disconnecting the battery, the distance between the plates is tripled and a dielectric medium of K = 10 is introduced between the plates of the capacitor. Explain giving reasons, how will the following be affected:
(i) capacitance of the capacitor
(ii) charge on the capacitor, and
(iii) energy density of the capacitor.

Question

A parallel plate capacitor of capacitance C is charged to a potential V by a battery. Without disconnecting the battery, the distance between the plates is tripled and a dielectric medium of K = 10 is introduced between the plates of the capacitor. Explain giving reasons, how will the following be affected:
(i) capacitance of the capacitor
(ii) charge on the capacitor, and
(iii) energy density of the capacitor.

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