A parallel plate capacitor has capacitan...

A parallel plate capacitor has capacitance C. If it is equally filled with parallel layers of materials of dielectrics `K_1` and `K_2` —

`k_1 + k_2`

`(K_1K_2)/(K_1 - K_2)`

`(K_1 + K_2)/(K_1K_2)`

`(2K_1K_2)/(K_1 + K_2)`

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