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Question: Answered & Verified by Expert
Two capacitors of capacities 2C and C are joined in parallel and charged up to potential V. The battery is removed and the capacitor of capacity C is filled completely with a medium of dielectric constant K. The potential difference across the capacitors will now be:
PhysicsCapacitanceJEE MainJEE Main 2021 (27 Jul Shift 1)
Options:
  • A VK+2
  • B VK
  • C 3VK+2
  • D 3V K
Solution:
1241 Upvotes Verified Answer
The correct answer is: 3VK+2

Now,

VC=2CV+CVKC+2C

=3V K+2

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