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A parallel- plate capacitor, fileld with...

A parallel- plate capacitor, fileld with a dielectric of dielectric consatnt `k`, is charged to a potential `V_(0)`. It is now disconnected from the cell and the slab is removed. If it now discharges, with time constant `tau`, through a resistance then find time after which the potential difference across it will be `V_(0)` ?

A

`ktau`

B

`tau In k`

C

`tau In (1-1/k)`

D

`tau In (k-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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