Electrostatics Question 12
Question: A parallel plate condenser has a capacitance $ 50\mu F $ in air and $ 110\mu F $ when immersed in an oil. The dielectric constant $ ‘k’ $ of the oil is [CPMT 1985; J & K CET 2004]
Options:
A) 0.45
B) 0.55
C) 1.10
D) 2.20
Show Answer
Answer:
Correct Answer: D
Solution:
$ C _{medium}=KC _{air} $
therefore $ K=\frac{C _{medium}}{C _{air}}=\frac{110}{50}=2.20 $
