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A parallel plate capacitor with air betw...

A parallel plate capacitor with air between the plates has capacitance of `9pF`. The separation between its plates is 'd'. The space between the plates is now filled with two dielectrics. One of the dielectrics has dielectric constant `k_1=3` and thickness `d/3` while the other one has dielectric constant `k_2=6` and thickness `(2d)/(3)`. Capacitance of the capacitor is now

A

`1.8pF`

B

`45 pF`

C

`40.5pF`

D

`20.25pF`

Text Solution

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The correct Answer is:
C
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