MCQ
A parallel plate capacitor of area A, plate separation d and capacitance C is filled with three different dielectric materials having dielectric constants $k_1,k_2$ and $k_3$ as shown. If a single dielectric material is to be used to have the same capacitance C in this capacitor, then its dielectric constant k is given by
- A$\frac{1}{k}=\frac{1}{k_1}+\frac{1}{k_2}+\frac{1}{2k_3}$
- ✓$\frac{1}{k}=\frac{1}{k_1+k_2}+\frac{1}{2k_3}$
- C$k=\frac{k_1k_2}{k_1+k_2}+2k_3$
- D$k=k_1+k_2+2k_3$