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A parallel plate capacitor has a paralle...

A parallel plate capacitor has a parallel slab of copper inserted between and parallel to the two plates without touching the plates. The capacitor after the introduction of the copper sheet is

A

minimum when the copper slab touches one of the plates

B

maximum whne the copper slab touches one of the plates

C

invarient for all positions of the slab between the plates

D

gteater than that before introducting the slab

Text Solution

Verified by Experts

The correct Answer is:
C, D
`C = (inA)/(d)` Before insertion of metal plate
`C' = (inA)/(d-t)` after insertion of copper plate which in invarient of position of plate.
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