Electrostatics Question 67

Question: A parallel plate capacitor has a capacity C . The separation between the plates is doubled and a dielectric medium is introduced between the plates. If the capacity now becomes2C , the dielectric constant of the medium is [Haryana CEE 1996]

Options:

A) 2

B) 1

C) 4

D) 8

Show Answer

Answer:

Correct Answer: C

Solution:

C1=ε0Ad1 and C2=Kε0Ad2 C1C2=1K×d2d1

=C2C=1K×2dd

therefore K = 4



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