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Two idential parallel plate capacitors ...

Two idential parallel plate capacitors are connected in sereis to a cell of `120V`. A dielectric slab `(K=3)` in placed in one of the capacitor. The p.d., across the capacitors will now be

A

`20V,100V`

B

`30V,90V`

C

`40V,80V`

D

`60V,60V`

Text Solution

Verified by Experts

The correct Answer is:
B
`V_(1)=((3C)/(C+3C))xx120=90V`
`V_(2)=120-V_(1)=30V`
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