The two circular plates of a parallel pl...

The two circular plates of a parallel plate capacitor are 8 cm in diameter each of `15 mm` apart. An ebonite plate `0.5 cm` thick is introduced between the plates. Calculate its capacity. If the plate were of copper, what would be the new capacity ? Take `K = 2.5`.

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The correct Answer is:

`3.71 xx 10^(-12) F ; 4.45xx10^(-12) F`

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