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A parallel plate capacitor with air betw...

A parallel plate capacitor with air between the plates has a 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

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The correct Answer is:
B
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RESONANCE ENGLISH-CAPACITANCE-Exercise - 3
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  2. A parallel plate capacitor having plates of area S and plate separatio...

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  3. In the circuit shown below, the key is pressed at time t = 0. Which of...

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  4. Process 1 : In the circuit the switch S is closed at and the capacito...

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  5. Process 1 : In the circuit the switch S is closed at and the capacito...

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  6. Three identical capacitors C(1),C(2) and C(3) have a capacitance of 1....

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  7. A battery is used to charge a parallel plate capacitor till the potent...

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  8. A parallel plate condenser with a dielectric constant K between the pl...

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

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  10. Let C be the capacitance of a capacitor discharging through a resistor...

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  11. A resistor R and 2muF capacitor in series is connected through a switc...

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

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  13. The figure shows an experimental plot for discharging of a capacitor i...

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  14. Two capacitors C(1) and C(2) are charged to 120V and 200V, respectivel...

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

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  16. In the given circuit, charge Q(2) on the 2muF capacitor changes as C i...

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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 2 muF is required in an electrical circuit across a p...

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  19. In the given circuit diagram when the current reaches steady state in ...

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

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