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A parallel plate capacitor C with plates...

A parallel plate capacitor C with plates of unit area and separation 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

`(6 epsilon_(0)R)/(5d+3Vt)`

B

`((15d+9Vt)epsilon_(0)R)/(2d^(2)-3dVt-9V^(2)t^(2))`

C

`(6 epsilon_(0)R)/(5d-3Vt)`

D

`((15d-9Vt)epsilon_(0)R)/(2d^(2)+3dVt-9V^(2)t^(2))`

Text Solution

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The correct Answer is:
A
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