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Question: Answered & Verified by Expert
There is an air filled $1 p F$ parallel plate capacitor. When the plate separation is doubled and the space is filled with wax, the capacitance increases to $2 p F$. The dielectric constant of wax is
PhysicsCapacitanceJEE Main
Options:
  • A 2
  • B 4
  • C 6
  • D 8
Solution:
2627 Upvotes Verified Answer
The correct answer is: 4
$C=\frac{E_0 A}{d}=1 p F \quad$ and $C^{\prime}=\frac{K_{c_0} A}{2 d}=2 p F \quad \therefore K=4$.

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