A parallel plate air capacitor of capacitance `C` is connected to a cell of `emF V` and then disconnected from 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 incorrect ?A. The potential difference between the plates decreases `K` timesB. The enerty stored in the capacitor decreased `K` timesC. The change in energy is `1/2C_(0)varepsilon^(2)(K-1)`D. The change in energy is `1/2C_(0)varepsilon^(2)(1- 1/K)`

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

1.	A parallel plate air capacitor of capacitance `C` is connected to a cell of `emF V` and then disconnected from 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 incorrect ?A. The potential difference between the plates decreases `K` timesB. The enerty stored in the capacitor decreased `K` timesC. The change in energy is `1/2C_(0)varepsilon^(2)(K-1)`D. The change in energy is `1/2C_(0)varepsilon^(2)(1- 1/K)`
Answer» Correct Answer - A::B::D

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