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A parallel plate capacitor C with plates...

A parallel plate capacitor C with plates of unit area and separaion d is filled with a liquid of dielectric constant K = 2. The level of liquid is `d//3` initially. Suppose the liquid level decreases at a constant speed V. the time constant as a function of time t is

A

`(6epsilon_0)/(5d+3vt)`

B

`((15d+9vt)epsilon_0)/(2d^2-3dvt-9^2t^2)`

C

`(6epsilon_0)/(5d-3vt)`

D

`((15d-9vt)epsilon_0)/(2d^2+3dvt-9v^2t^2)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • A parallel plate air capacitor has a capacitance C. When it is half filled with a dielectric of dielectric constant 5, the percentage increase in the capacitance will be

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