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A20nF air capacitor is connected to a power supply, the energy stored in the capacitor is...

A20nF air capacitor is connected to a power supply, the energy stored in the capacitor is 900 x 10 J. While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space between the plates. This increases the stored energy by 180 x 10-5 J. lhat is the dielectric constant of the slab?
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Answer #1

Solution:-

In the given question the value of energy stored in empty capacitor is doubtful. So I am assuming the value U​​​​​​0 = 900 × 10-5 J

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