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Figure shows a capacitor having three la...

Figure shows a capacitor having three layers of equal thickness and same area as that of its plates. Layer-I is free space, Layer-II is a conductor and Layer-Ill is a dielectric of dielectric constant `k`. Calculate the ratio of energy stored in region III to total energy stored in capacitor when a potential difference is applied across the plates of capacitor.

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The correct Answer is:
`1/(k+1)`
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