Electrostatics Question 71

Question: The capacity of a condenser in which a dielectric of dielectric constant 5 has been used, is C . If the dielectric is replaced by another with dielectric constant 20, the capacity will become [MP PMT 1996]

Options:

A) C4

B) 4C

C) C2

D) 2C

Show Answer

Answer:

Correct Answer: B

Solution:

C=Kε0Ad; C1C2=K1K2

therefore CC2=520

therefore C2 = 4C



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