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CGP EDU Academic Team
Published on: September 12, 2026
The capacitance of an air filled parallel plate capacitor is $10 \mu \mu \sqrt{F}$ . The separation between the plates is doubled and the space between the plates is then filled with wax giving the capacitance a new value of $40 \times 10^{-12} \, \mathrm{farad},$ . The dielectric constant of wax is
Text Solution
Verified by ExpertsThe correct answer is:
C
$C_1 = \frac{\varepsilon_0 A}{d}$ and $C_2 = \frac{K \varepsilon_0 A}{2 d}$
⇒ ⇒ $\frac{C_2}{C_1} = \frac{K}{2}$ ⇒ ⇒ $\frac{40 \times 10^{-12}}{10 \times 10^{-12}} = \frac{K}{2}$ ⇒ ⇒ K = 8
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