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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

`45 pF`

B

40.5 pF

C

20.25 pF

D

1.8 pF

Text Solution

Verified by Experts

The correct Answer is:
B
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RESONANCE-CAPACITANCE-Exercise - 3
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  4. Consider a simple RC circuit as shown in figure 1. Process 1 : In th...

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  9. A parallel plate capacitor with air between the plates has capacitance...

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  10. LetC be the capacitance of a capacitor discharging through a resistor ...

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  12. Combination fo two identical capacitors, a resistor R and a dc voltage...

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  14. Two capacitors C1 and C2 are charged to 120V and 200V respectively. It...

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  15. A parallel plate capacitor is made of two circular plates separated by...

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  16. In the givven circuit, charge Q2 on the 2muF capacitor changes as C is...

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  17. A combination of capacitors is set up as shown in the figure. The magn...

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  18. A capacitance of 2mu F is required in an electrical circuit across ...

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  19. In the given circuit digram when the current reaclies steady state in ...

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  20. A parallel plate capacitor of capacitance 90 pF is connected to a bat...

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