A parallel plate air capacitor of capacitance C_0 is connected to a cell of emf V and then disconnected it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is correct?

A parallel plate air capacitor of capacitance C_0 is connected to a ce

1.	A parallel plate air capacitor of capacitance C_0 is connected to a cell of emf V and then disconnected it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is correct?
Answer» Charge on PLATES becomes `KC_0V` The ENERGY stored in the CAPACITOR becomes K TIMES The change in energy `1/2C_0V^2(k-1)` Thechangein energy ` 1/2 C_0V^2(1 //K-1)` Answer :D

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A parallel plate air capacitor of capacitance C_0 is connected to a cell of emf V and then disconnected it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is correct?

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