Electrostatics Question 607

Question: A parallel plate capacitor has capacitance C. If it is equally filled with parallel layers of materials of dielectric constants K1 and K2 its capacity becomes C1 . The ratio of C1 to C is [MP PMT 2001]

Options:

A) K1+K2

B) K1K2K1K2

C) K1+K2K1K2

D) 2K1K2K1+K2

Show Answer

Answer:

Correct Answer: D

Solution:

CA=K1ε0Ad/2,CB=K2ε0Ad/2

Ceq=C1C2=2K1K2K1+K2

=CACBCA+CB=(2K1K2K1+K2)ε0Ad

(c=ε0Ad)



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