Question

A parallel plate condenser has a capacitance `50 muF` in air and `100 muF` when immersed in an oil. The dielectric constant `k` of the oil is
A. 0.2
B. 1.5
C. 2.2
D. 2.5

Answer 1

Correct Answer - C
`C_(m)=C_("air")xxk`
`therefore" "k=C_(m)/C_("air")=110/50=2.2`