Question

A capacitance of a parallel plate air capacitor is $10\mu F$. Dielectric constant of the medium to be introduced in between its plates to double its capacitance is

• A. $2$
• B. $3$
• C. $4$
• D. $2.5$
• E. $1.5$

Answer 1

Answer: (A)

$\frac{C_m}{C_a}=K=\frac{20\mu F}{10\mu F}=2$